Factory Price Water Soluble NPK Fertilizer 13-13-13/19 19 ...

1. With all kinds formula including balanced ,high-N, high-P,and high-K formulas.2. Providing essential macro elements nutrition during growing stages of seeding,flowering to fruiting period. AndaPro is theprofessional all purpose specialty soluble fertilizers to growers. It feeds both through the roots and the leaves. This formula ofnitrogen, phosphorus and potassium provides fast green-up and rapid leaf expansion.Recommended for use on all the indoor and outdoor plants. Indoors it is especially effective on foliage plants, keeping leavesgreen. A proven performer in the vegetable garden for generations, this product may be used in combination with AndaFocus givingyour plants greener leaves, more flowers and brighter colors.

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High N series for start stage and some vegetables like spinach and cabbage.

-High P series for appling after transplanting and for crops like beans.

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High K series for later stage and crops like potato, tomato, tabacco.

It is usually used as top dressing and can also be used as base manure and seed manure. This product is extensively applied to
grain crops like paddy, wheat, corn and sorghum and to cash crops including tobacco, tea, cotton, gourds, fruits and vegetables.

Yes, You Should Fertilize Your Houseplants—Here's How

Houseplants add so much to your space—especially if you don't have access to a big yard or outdoor area. Not only do plants bring tons of color and life to a room, but stylish planters can offer a beautiful decor moment. But there's a caveat: Potted houseplants don't have a constant stream of nutrients coming in from the soil. Over time, the nutrients in the potting soil get depleted, and your plants can suffer. Fertilizing houseplants can keep them looking happy.

 

 

 

 

What Kind of Fertilizer Should You Use?

Not all fertilizers are created equal. In fact, it's common for people to use the wrong type or too much fertilizer and kill their houseplant. "The wrong kind or delivery method can be too much for the plant," says Patrick Hillman, plant enthusiast and owner of Buzz and Thrive Gardens. "I tell my customers to use a water-soluble fertilizer, specifically a rich fish emulsion fertilizer. Anything organic is going to feed longer than a chemical fertilizer."

 

 

 

How to Apply Fertilizer

It's easier than you think, but don't just tip fertilizer into your potted plants. Hillman recommends diluting the fertilizer in a ratio of ¼ to ½ teaspoon fertilizer per gallon of water. "I tell people to dilute it a little more than the package says to be on the safe side," he says.

 

Another great tip is to water your plant before you fertilize it. It keeps the fertilizer from burning the roots, and the moist soil helps the fertilizer absorb better. If you're thinking that a fish emulsion fertilizer is going to smell, you're right. But Hillman says that it goes away in a day or two. If there's a water runoff dish underneath your pot or planter, empty it to clear out excess fertilizer water.

 

 

 

When to Apply Fertilizer

Give your plants a feeding every two to three weeks from the end of March to the middle of September, and don't fertilize after that. "It's good to give the plants a little rest," says Hillman. "The days get shorter, and the plants won't be producing a lot of new growth so the plant won't take up as much water and nutrients."

 

 

 

New Growth, Now What?

Keep an eye on your plants and whether their roots are outgrowing their pots or planters. Springtime is a great season to take stock and see what might need to be replanted in slightly larger pots, Hillman explains. If they need to be repotted, add in a little compost too.

 

 

 

 

Plants You Should Not Fertilize Often

Succulents and cacti don't like too much of a nitrogen-based fertilizer, says Hillman. Limit it to once every six weeks to be on the safe side. Setting your plants up with a good quality soil and compost gives them a fighting chance, too.

NPK Fertilizer: Everything you need to know

How often are you confused while choosing fertilizer? New plant parents get confused easily. But not anymore. 

NPK fertilizer is the best fertilizer choice. An NPK fertilizer is a manmade fertilizer containing Nitrogen (N), Phosphorus (P), and Potassium (K).

Why these 3 elements? 

Well, NPK fertilizer is important for providing enough nutrients. Without these major nutrients, your plants won’t grow well. 

Additionally, each element contributes to a plant’s health and appearance.  For example, if you want to boost your plant’s production, potassium is the key. However, if you see a leggy growth, your plants need nitrogen-rich fertilizer.

Since you know that NPK fertilizer is highly beneficial to your plant, how do you choose the best NPK fertilizer?  Moreover, how often should you use NPK fertilizer? Using the wrong amount of fertilizer can damage your plant. 

However, don’t worry, this article is here to help. Here in this article, you will find answers to all your questions about What is NPK fertilizer, from what it is to how much you should apply.

What is NPK fertilizer?

NPK fertilizers are man-made fertilizers containing nitrogen (N), phosphorus (K), and potassium (P). It is important for plants to have each element in order to grow properly and appear healthy. 

We will look into each element and see what effect they have on your plant.

Nitrogen

Nitrogen plays a crucial role in the production of new tissues in plants, especially leafy tissues.

If lawns and plants do not receive sufficient nitrogen, they will grow slowly and become pale. 

Too much nitrogen causes plants to put their efforts into green growth and lose their blooms and fruit.

Phosphorus

In plants, phosphorus helps them grow roots, set buds, and set seeds.

Phosphorus helps plants use other nutrients more efficiently, and it helps turn solar energy into useful energy.

Potassium

Potassium boosts plant growth.

It helps plants make carbohydrates and makes them disease-resistant.

It also regulates metabolism.

Plants low in potassium may be stunted and produce less.

Every fertilizer packet will have these elements and its own NPK ratio or formula. Let’s figure out what is NPK fertilizer formula.

NPK Fertilizer Formula

NPK fertilizer formulas are included in every fertilizer you buy. On fertilizer packets, the NPK formula is a significant feature. It measures the percentage of nitrogen (N), phosphorus (P), and potassium (K) by volume. 

For example, A fertilizer containing NPK 19-19-19 means that the fertilizer contains 19% nitrogen, 19% phosphorus, and 19% potassium. 

Another example can be the 25-4-2 NPK formula, here it contains 25% nitrogen, 4% phosphorus, and 2% potassium.

In fertilizers, all of these components must be present; if any are missing, then the ratio will be zero. For example, 12-0-0 fertilizer contains nitrogen but no phosphorus or potassium.

Why is Fertilizing Houseplants with NPK important?

For plants to reach their full genetic potential, they need 17 essential elements. Among these 17, 14 are absorbed by plants through the soil, and the remaining three originate from air and water. 

Moreover, plants take up nutrients from the soil in different ways, and crops need supplementation after harvest. Therefore, NPK houseplant fertilizer is important for providing the plant with the necessary supplements.

Fertilizers contain nitrogen, phosphorus, and potassium, which are considered the “Big 3” nutrients. A plant’s nutrition depends on each of these fundamental nutrients.

The most important nutrient in plants is nitrogen, which is absorbed more than any other element. 

Nitrogen is important for making plants healthy as they grow and are nutritious after they are harvested. In Plants, protein makes up the bulk of their tissues, and nitrogen is essential to its formation. 

Second, phosphorus plays a key role in a plant’s ability to use and store energy, including photosynthesis. A normal plant’s growth and development depend on it as well. Typically, phosphate rock is used in commercial fertilizers as a source of phosphorus.

A third key component of commercial fertilizers is potassium. This compound assists plants in resisting disease as well as increasing crop yields and quality. Potassium also strengthens a plant’s root system and prevents wilting when the weather is cold or dry. 

Which NPK fertilizer is good for plants?

Normally, plants require more nitrogen and potassium than phosphorus. For most indoor plants, an N-P-K ratio of 4-1-3,  6-1-4, or 5-5-5 would be ideal. For flowering indoor plants 3-1-2 is highly suitable.

However, the NPK ratio will also depend on the needs of your plants. For example, if your plant is lacking phosphorus then it is best to feed it NPK fertilizer rich in phosphorus. 

See the table below to determine your plant’s deficiency and what element it needs.

Element Deficiency symptomsNitrogen (N)Chlorosis occurs in general, especially in older leaves; in severe cases, the leaves turn yellow, then tan as they die; some plants exhibit purple colouring due to purple pigment accumulationPhosphorus (P)A dark green plant that becomes red or purple as it accumulates anthocyanins; later stages of growth, the stems become stunted and older leaves turn brown and diePotassium (K)There are spots of dead tissue on the tips and margins of leaf tips or stems; mostly older leaves are affected.Nitrogen deficiencyPhosphorus DeficiencyPotassium Deficiency 

So, as you can see NPK ratios don’t work the same way for every plant. There is no doubt that plants need macronutrients, secondary nutrients, and micronutrients. It is necessary to adjust these nutrients according to the life cycle, growth, and reproduction of the plant.

Example 1: Those plants that grow in dense soils are heavier nitrogen and phosphorus feeders. For vigorous root growth, these plants need nitrogen and phosphorus, which are essential for reaching moisture and nutrients in the soil.

Example 2: Some plants feed heavily on potassium, which is needed for photosynthesis and growth. In contrast, other plants love the balance of NPK and trace elements – such as zinc, boron, and molybdenum – needed to produce adequate flowering and fruit production.

Hence, the nutrition needs of different plants vary. 

Is NPK good for all plants?

Yes, NPK is good for all plants. As all plants require nitrogen, phosphorus, and potassium to grow optimally. The plant will die if it does not receive enough of any one of these nutrients.

When to use NPK fertilizer?

It is important to understand when it is time to use NPK fertilizer. There may be times when you do not need to use NPK fertilizer on your plants. 

In the case of recently potted or repotted plants, fertilizer will be of no benefit. Because there are plenty of nutrients in their fresh potting mix that they have yet to utilize! 

Also, wait 2–3 months after freshly repotting before fertilizing active growing plants. If you repotted during the fall and winter, you can skip fertilizer until next spring.

Early spring to late summer is the best time to use NPK to fertilize houseplants sparingly. This is the time of year when plants are actively growing, so they will benefit from fresh nutrients the most. It is best not to fertilize plants at the end of their growing season. 

When it’s hot outside, fertilize plants at the start of the day or at the end of the day. Ensure soil nutrients are distributed evenly by watering fertilizers thoroughly.

In general, fertilizer is applied near or slightly below seed rows and between rows, where roots can easily reach it. Fertilizer is commonly buried 2 inches deep and 2 inches to the side of seeds or plants.

Moreover, the fertilizer you are using will determine how often you need to fertilize your plants. However, you can fertilize every other week or every month.

How to use NPK Fertilizer?

In most cases, NPK fertilizer is chemical fertilizer (15:15:15) or (19:19:19). You can buy these in granular form, powdered form, or liquid form.

Due to their strength and concentration, chemical NPK fertilizers are administered in smaller quantities to plants. A small spoon is provided per plant using the ring method. (Ring method is placing the fertilizer in a circle around the base of a plant)

The fertilizer should be mixed with water according to the following steps:

Use one-half teaspoon of NPK fertilizer.

Add it to 2 litres of water and mix well.

Mix well and add 1/half teacup per plant per week (or 3 weeks for small plants).

You can spray it on the leaves or you can add diluted solution to the plant (not close to the roots)

Always, make sure you follow the instructions on the fertilizer label when applying it. After applying the fertilizer, water the plant immediately. Otherwise, the plant will be burned.

There is also the easiest method of throwing them on the soil. They are soluble in water. Your plant slowly absorbs NPK elements as you water it, as the NPK gradually dissolves in water.

It is also possible to purchase NPK in organic form. In soil, organic NPK can be added without worrying about quantity. NPK is present in most organic fertilizers, such as compost, vermicompost, and cow-dung manure.

What is the best fertilizer NPK?

A plant’s needs and the type of fertilizer determine the best NPK fertilizer. For some plants, the best fertilizer NPK is listed below.

1. Balanced NPK fertilizer ratio for all plants

For each type of indoor plant, use a fertilizer that has a balanced NPK ratio, secondary nutrients, and micronutrients. 

1-1-1 fertilizer,

2-2-2 fertilizer,

10-10-10 fertilizer, or

19-19-19 fertilizer

For indoor plants that have specific fertilizer requirements, you can purchase specialized fertilizers that are tailored to their needs.

2. For all fruiting and flowering plants

Early spring is the best time to feed flowers. And in the summer they should be fed every 2-4 weeks. Fertilize fruit trees spring and fall at least twice a year.

5-10-10 fertilizer, (for flower), or

10-10-10 fertilizer (for fruit)

3. Succulent 

A succulent can grow in a variety of soil conditions and compositions. Additionally, they need only light fertilizer. For most varieties with a tolerant root system, one application in late summer should be fine

1-1-1 fertilizer

5-10-10 fertilizer,

13-11-11 fertilizer,

15-15-15 fertilizer, or

14-14-14 fertilizerlizer

4. Fiddle leaf fig 

For Fiddle Leaf Figs to thrive, they need an optimal balance of nutrients. The dark green colour of the leaves will disappear if the plant doesn’t receive enough fertilizer.

3-1-2 fertilizer,

6-2-4 fertilizer, or

balanced 10-10-10 fertilizer

5. Snake plants 

Only fertilize snake plants twice a year since they grow slowly. Fertilize them in the spring to strengthen them, and then in the fall to sustain them.

2-2-2 fertilizer,

10-10-10 fertilizer, or

20-20-20 fertilizer

6. Cactus 

For optimal growth and health, cacti should only be fertilized once or twice a year. It’s a good time to fertilize in the spring. The reason is that cacti are more susceptible to nutrient deficiencies during these periods.

1-2-2 fertilizer,

2-7-7 fertilizer,

5-10-10 fertilizer,

5-15-10 fertilizer, or

10-10-10 fertilizer

7. Peace lily

During the growing season, Peace Lilies only require feeding 2-3 times. Their growth and beauty will be enhanced by abundant primary and secondary nutrients.

2-1-2 fertilizer,

2-2-2 fertilizer, or

10-10-10 fertilizer

8. Money tree 

As often as once a month, fertilizing Money Trees is essential for their health. It ensures a steady supply of nutrients, which aids in strong leaf growth.

10-10-10 fertilizer,

18-6-11 fertilizer, or

20-20-20 fertilizer

9. Golden Pothos

If you are not getting specific fertilizer for golden pothos, then get the following NPK ratio fertilizer. You can fertilize golden pothos every 10 days in spring, twice in summer, and once in autumn.

7-3-6 fertilizer, 

8-4-6 fertilizer, or

7-4-7 fertilizer

10. Lotus

Once a month or every three weeks, feed the lotus,

10-10-10 fertilizer, or

5-10-10 fertilizer

FAQs

Q1. Why is NPK used in fertilizer?

Ans. Nitrogen, potassium, and phosphorus are necessary for plants to grow and thrive. A well-fed plant is more productive and healthier. If you don’t add fertilizer to your soil, it may not provide enough nutrients for optimal growth.

Q2. Which NPK is best for flowering?

Ans. Look for a fertilizer with a high potassium and low nitrogen content for fruiting and flowering plants. By doing this, you will encourage the growth of fruit and flowers without promoting excessive leaf growth. The production of flowers and the quality of fruits and vegetables will be poor if potassium levels are low.

Q3. Which NPK is best for root growth?

Ans. A 3-20-20 fertilizer containing 3% nitrogen, 20% phosphorus, and 20% potassium will encourage strong, healthy roots. Low nitrogen content promotes leggy green growth over rooting and flowering.

Q4. How long does it take for NPK fertilizer to work?

Ans. It takes 1-5 days after fertilizer application for results to appear.

Conclusion

It is important to include NPK in your plant’s diet for it to grow healthy and produce a good crop and flowers. If you want to apply NPK, you can dilute it in water or add it to the soil. Nevertheless, don’t forget to water your plants after fertilizing, otherwise, they will be burned.

The early spring to late summer, when your plant is actively growing, is the best time to apply NPK. Moreover, to avoid burning the plants, apply NPK fertilizer early in the morning or late at night.

There are different NPK ratios for different plants depending on the type and need of the plant. However, balanced NPK is beneficial to all indoor plants. 

In addition, some of the plants may need fertilizer rich in nitrogen if they are growing leggy. Furthermore, it is best to use a fertilizer with high potassium and low nitrogen for flowering plants.

Please feel free to ask any questions related to What is NPK fertilizer in the comment section below. I’m happy to assist you with any questions you may have. 

Related Articles

The Basics of Fertilizing Your Plants

 

No matter how hard one tries, it’s tough to transform the topic of fertilizers into lively conversation. But for all gardeners, knowledge of fertilizers and how to apply them effectively is as crucial to vigorous plant growth as knowing a plant’s hardiness zones. So in the interest of growing healthy plants, what follows is a brief discussion of the why, what, how, and when of applying these multi­vitamins.

Three prime chemical elements are found in all mixed fertilizers

N = Nitrogen promotes healthy leaf growth by stimulating the production of chlorophyll (the main chemical involved in photosynthesis—how plants convert sunlight to food).

P = Phosphorus supports the vigorous development of roots, stems, blossoms, and fruits.

K = Potassium plays a key role in helping plants digest and manufacture their foods.

 

 

Why plants need fertilizers

All of the nutrients essential to plant growth are present in the soil or are floating in the air, so what’s the point of fertilizing? The point is that not all plants can access the key nutrients found in the soil or in the air. Each soil type has its own mix of nutritional ingredients, so before considering what fer­tilizers a plant may require, we need to con­sider the soil in which a plant is growing. Activities like intensive farming, construction, and traffic can alter soil chemistry and structure, limiting the nutrients that plants can use. In some cases, the nutrients aren’t naturally there to begin with or have been leached out over time. For these reasons, we, the diggers of the dirt and keepers of the garden, must replenish, replace, or help release those elements that are beyond the reach of our plants.

When it comes to fertilizing, more does not mean better. It is possible to overfeed your plants. Too much fertilizer can damage and maybe even kill your plants. Before applying any fertilizer, it’s a good idea to have your soil tested so you can select the type and formula that suits your plants’ needs. In return, our plants will reward us with bigger flowers, bigger leaves, and bigger fruits and vegetables.

 

 

Long-term sustenance vs. fast food: Which is the right feeding choice for your situation?

 

1. Granular fertilizers deliver food to a plant slowly but have the advantage of longevity.

Broadcast application

 

This method, which covers large areas well, is used to apply granular fer­tilizers to lawns or to new beds before they are planted. The broadcast method can be done with a hand-rotary or drop spreader.

Top-dress application

 

This technique, which provides nutrients to individual plants such as shrubs and perennials, is done by hand with granular fertilizers. Simply apply the fertilizer around the base of the plant, extending to the drip line. For vegetables, place the fertilizer in a strip parallel to the plant­ing row.

2. Water-soluble fertilizers are faster acting but must be applied more frequently.

Base application

This method gives plants food while you water. Use with water-soluble fertilizers, follow the mixing instructions, and water the soil at the plant’s base with a watering can or hose attachment. This is good for feeding container plants and vegetables.

Foliar application

This approach is similar to base application, but the water is applied to the leaves rather than to the soil. It is useful when plants need to quickly absorb trace elements, such as iron.

 

 

What plants need to thrive

The three essential elements that all plants need are nitrogen, phosphorus, and potassium—or N-P-K, the proportions of which are stated as numbers on the package. For instance, a general-purpose fertilizer labeled 20-20-20 means that each chemical element—N, P, and K—contributes 20 percent by weight to the total formula. (The remaining 40 percent is composed of inert materials and trace elements.) The element percentages are offered in various proportions to suit different fertil­izer needs. If you are looking to boost flower production, you want a mix like 15-30-15, which is high in flower-developing phosphorus. If you want to green up your lawn, choose a mix like 25-6-4, which is high in nitrogen. Many fertilizers are formulated for specific plants like roses, bulbs, or vegetables. Be sure to check the label for the N-P-K ratio, as you may be able to use a general fertilizer with close to the same nutrient percentages but at a lower price.

In addition to N-P-K, most fertilizers contain traces of other elements important to plant health. Some trace elements are more important than others, but each nourishes a plant in its own way. The main trace elements in fertilizers are calcium, magnesium, iron, copper, manganese, zinc, molybdenum, boron, and sulfur. (You can usually purchase these items individually as well.) If any of these elements is lacking, a plant may show characteristic deficiency symptoms. An iron deficiency, for instance, causes chlorosis (yellow leaves with green veins), which is easily corrected with a dose of chelated iron.

There are quite a number of fertilizers available today, both organic (plant and animal derived) and inorganic (chemically derived). While most are commercially produced inorganic fertilizers, there are a few options for the organic gardener. Many rely on the old standbys—animal manure and compost—which, although organic and good for soil building, actually contain few nutrients. For flower and fruit development, bonemeal with a high phosphorus count is the organic of choice, while blood meal is a good source of nitrogen.

 

 

How to choose a fertilizer

There are two types of fertilizers available to the home gardener: granular and water soluble. Each type has advantages and disadvantages. Granular fertilizers deliver food to a plant slowly but have the advantage of longevity. Since they must be broken down by water before a plant can use them, granular fertilizers do not leach out of the soil as rapidly as water-soluble types. Water-soluble fertilizers are faster acting but more transient, which means they must be applied more frequently than the granular type.

Both types of fertilizers are effective, so the one you choose depends on whether you want to give your plants a quick but frequent fix or a sluggish but extended feeding. And for those of us gardeners who are oh so very busy (or oh so very lazy), nothing beats time-release granular fertilizers, some of which require only one application every six to nine months.

You can apply granular and water-soluble fertilizers in several ways, but be sure to follow a few general guidelines when doing so:

Avoid applying a fertilizer on windy or rainy days. This can cause it to be misplaced and ineffective.

When using a granular fertilizer, always be sure to knock the fertilizer off plant leaves to avoid burn.

Never apply a granular fertilizer when the soil is extremely dry, and water it in thoroughly after applying to prevent plant burn.

When to fertilize

Knowing when to fertilize is as important as using the right fertilizer. If you don’t apply the fertilizer at a time when the plant can use it, there’s no point in fertilizing. Most perennials, annuals, vegetables, and lawns will reward you handsomely if you feed them with a balanced granular fertilizer in early spring. Avoid fertilizing before the spring showers, however, or you will be throwing your money away, since the nutrients will simply leach out of the soil. Annuals like to be fed an additional three to four times during the growing season with a high-phosphorus, water-soluble fertilizer, while lawns benefit from a second granular application in early fall.

Trees and shrubs, especially those that flower, also like a dose of a balanced granular fertilizer in the spring and another in the fall. But remember to heed the phrase “late and light” when fertilizing trees and shrubs in autumn. Late fall is also a good time to fertilize bulbs, especially if you are planting them for the first time; a teaspoon of bonemeal added to each bulb hole will generally be sufficient.

Roses have insatiable appetites. To keep them fat and happy, feed them with a soluble fertilizer every seven days during their blooming season. “Weekly, weakly” is the feeding mantra for all roses. One final thought: Feed only well-established plants; fertilizing seeds or tiny seedlings will cause fertilizer burn.

Just remember, these guidelines on feeding are just that—guidelines. Read the package directions before scattering both food and caution to the wind.

Sandra Gorry is a horticulturalist and garden designer who lives in New York City.

All photos, except where noted: Jennifer Benner

 

It is usually used as top dressing and can also be used as base manure and seed manure. This product is extensively applied to
grain crops like paddy, wheat, corn and sorghum and to cash crops including tobacco, tea, cotton, gourds, fruits and vegetables.

Yes, You Should Fertilize Your Houseplants—Here's How

Houseplants add so much to your space—especially if you don't have access to a big yard or outdoor area. Not only do plants bring tons of color and life to a room, but stylish planters can offer a beautiful decor moment. But there's a caveat: Potted houseplants don't have a constant stream of nutrients coming in from the soil. Over time, the nutrients in the potting soil get depleted, and your plants can suffer. Fertilizing houseplants can keep them looking happy.

 

 

 

 

What Kind of Fertilizer Should You Use?

Not all fertilizers are created equal. In fact, it's common for people to use the wrong type or too much fertilizer and kill their houseplant. "The wrong kind or delivery method can be too much for the plant," says Patrick Hillman, plant enthusiast and owner of Buzz and Thrive Gardens. "I tell my customers to use a water-soluble fertilizer, specifically a rich fish emulsion fertilizer. Anything organic is going to feed longer than a chemical fertilizer."

 

 

 

How to Apply Fertilizer

It's easier than you think, but don't just tip fertilizer into your potted plants. Hillman recommends diluting the fertilizer in a ratio of ¼ to ½ teaspoon fertilizer per gallon of water. "I tell people to dilute it a little more than the package says to be on the safe side," he says.

 

Another great tip is to water your plant before you fertilize it. It keeps the fertilizer from burning the roots, and the moist soil helps the fertilizer absorb better. If you're thinking that a fish emulsion fertilizer is going to smell, you're right. But Hillman says that it goes away in a day or two. If there's a water runoff dish underneath your pot or planter, empty it to clear out excess fertilizer water.

 

 

 

When to Apply Fertilizer

Give your plants a feeding every two to three weeks from the end of March to the middle of September, and don't fertilize after that. "It's good to give the plants a little rest," says Hillman. "The days get shorter, and the plants won't be producing a lot of new growth so the plant won't take up as much water and nutrients."

 

 

 

New Growth, Now What?

Keep an eye on your plants and whether their roots are outgrowing their pots or planters. Springtime is a great season to take stock and see what might need to be replanted in slightly larger pots, Hillman explains. If they need to be repotted, add in a little compost too.

 

 

 

 

Plants You Should Not Fertilize Often

Succulents and cacti don't like too much of a nitrogen-based fertilizer, says Hillman. Limit it to once every six weeks to be on the safe side. Setting your plants up with a good quality soil and compost gives them a fighting chance, too.

NPK Fertilizer: Everything you need to know

How often are you confused while choosing fertilizer? New plant parents get confused easily. But not anymore. 

NPK fertilizer is the best fertilizer choice. An NPK fertilizer is a manmade fertilizer containing Nitrogen (N), Phosphorus (P), and Potassium (K).

Why these 3 elements? 

Well, NPK fertilizer is important for providing enough nutrients. Without these major nutrients, your plants won’t grow well. 

Additionally, each element contributes to a plant’s health and appearance.  For example, if you want to boost your plant’s production, potassium is the key. However, if you see a leggy growth, your plants need nitrogen-rich fertilizer.

Since you know that NPK fertilizer is highly beneficial to your plant, how do you choose the best NPK fertilizer?  Moreover, how often should you use NPK fertilizer? Using the wrong amount of fertilizer can damage your plant. 

However, don’t worry, this article is here to help. Here in this article, you will find answers to all your questions about What is NPK fertilizer, from what it is to how much you should apply.

What is NPK fertilizer?

NPK fertilizers are man-made fertilizers containing nitrogen (N), phosphorus (K), and potassium (P). It is important for plants to have each element in order to grow properly and appear healthy. 

We will look into each element and see what effect they have on your plant.

Nitrogen

Nitrogen plays a crucial role in the production of new tissues in plants, especially leafy tissues.

If lawns and plants do not receive sufficient nitrogen, they will grow slowly and become pale. 

Too much nitrogen causes plants to put their efforts into green growth and lose their blooms and fruit.

Phosphorus

In plants, phosphorus helps them grow roots, set buds, and set seeds.

Phosphorus helps plants use other nutrients more efficiently, and it helps turn solar energy into useful energy.

Potassium

Potassium boosts plant growth.

It helps plants make carbohydrates and makes them disease-resistant.

It also regulates metabolism.

Plants low in potassium may be stunted and produce less.

Every fertilizer packet will have these elements and its own NPK ratio or formula. Let’s figure out what is NPK fertilizer formula.

NPK Fertilizer Formula

NPK fertilizer formulas are included in every fertilizer you buy. On fertilizer packets, the NPK formula is a significant feature. It measures the percentage of nitrogen (N), phosphorus (P), and potassium (K) by volume. 

For example, A fertilizer containing NPK 19-19-19 means that the fertilizer contains 19% nitrogen, 19% phosphorus, and 19% potassium. 

Another example can be the 25-4-2 NPK formula, here it contains 25% nitrogen, 4% phosphorus, and 2% potassium.

In fertilizers, all of these components must be present; if any are missing, then the ratio will be zero. For example, 12-0-0 fertilizer contains nitrogen but no phosphorus or potassium.

Why is Fertilizing Houseplants with NPK important?

For plants to reach their full genetic potential, they need 17 essential elements. Among these 17, 14 are absorbed by plants through the soil, and the remaining three originate from air and water. 

Moreover, plants take up nutrients from the soil in different ways, and crops need supplementation after harvest. Therefore, NPK houseplant fertilizer is important for providing the plant with the necessary supplements.

Fertilizers contain nitrogen, phosphorus, and potassium, which are considered the “Big 3” nutrients. A plant’s nutrition depends on each of these fundamental nutrients.

The most important nutrient in plants is nitrogen, which is absorbed more than any other element. 

Nitrogen is important for making plants healthy as they grow and are nutritious after they are harvested. In Plants, protein makes up the bulk of their tissues, and nitrogen is essential to its formation. 

Second, phosphorus plays a key role in a plant’s ability to use and store energy, including photosynthesis. A normal plant’s growth and development depend on it as well. Typically, phosphate rock is used in commercial fertilizers as a source of phosphorus.

A third key component of commercial fertilizers is potassium. This compound assists plants in resisting disease as well as increasing crop yields and quality. Potassium also strengthens a plant’s root system and prevents wilting when the weather is cold or dry. 

Which NPK fertilizer is good for plants?

Normally, plants require more nitrogen and potassium than phosphorus. For most indoor plants, an N-P-K ratio of 4-1-3,  6-1-4, or 5-5-5 would be ideal. For flowering indoor plants 3-1-2 is highly suitable.

However, the NPK ratio will also depend on the needs of your plants. For example, if your plant is lacking phosphorus then it is best to feed it NPK fertilizer rich in phosphorus. 

See the table below to determine your plant’s deficiency and what element it needs.

Element Deficiency symptomsNitrogen (N)Chlorosis occurs in general, especially in older leaves; in severe cases, the leaves turn yellow, then tan as they die; some plants exhibit purple colouring due to purple pigment accumulationPhosphorus (P)A dark green plant that becomes red or purple as it accumulates anthocyanins; later stages of growth, the stems become stunted and older leaves turn brown and diePotassium (K)There are spots of dead tissue on the tips and margins of leaf tips or stems; mostly older leaves are affected.Nitrogen deficiencyPhosphorus DeficiencyPotassium Deficiency 

So, as you can see NPK ratios don’t work the same way for every plant. There is no doubt that plants need macronutrients, secondary nutrients, and micronutrients. It is necessary to adjust these nutrients according to the life cycle, growth, and reproduction of the plant.

Example 1: Those plants that grow in dense soils are heavier nitrogen and phosphorus feeders. For vigorous root growth, these plants need nitrogen and phosphorus, which are essential for reaching moisture and nutrients in the soil.

Example 2: Some plants feed heavily on potassium, which is needed for photosynthesis and growth. In contrast, other plants love the balance of NPK and trace elements – such as zinc, boron, and molybdenum – needed to produce adequate flowering and fruit production.

Hence, the nutrition needs of different plants vary. 

Is NPK good for all plants?

Yes, NPK is good for all plants. As all plants require nitrogen, phosphorus, and potassium to grow optimally. The plant will die if it does not receive enough of any one of these nutrients.

When to use NPK fertilizer?

It is important to understand when it is time to use NPK fertilizer. There may be times when you do not need to use NPK fertilizer on your plants. 

In the case of recently potted or repotted plants, fertilizer will be of no benefit. Because there are plenty of nutrients in their fresh potting mix that they have yet to utilize! 

Also, wait 2–3 months after freshly repotting before fertilizing active growing plants. If you repotted during the fall and winter, you can skip fertilizer until next spring.

Early spring to late summer is the best time to use NPK to fertilize houseplants sparingly. This is the time of year when plants are actively growing, so they will benefit from fresh nutrients the most. It is best not to fertilize plants at the end of their growing season. 

When it’s hot outside, fertilize plants at the start of the day or at the end of the day. Ensure soil nutrients are distributed evenly by watering fertilizers thoroughly.

In general, fertilizer is applied near or slightly below seed rows and between rows, where roots can easily reach it. Fertilizer is commonly buried 2 inches deep and 2 inches to the side of seeds or plants.

Moreover, the fertilizer you are using will determine how often you need to fertilize your plants. However, you can fertilize every other week or every month.

How to use NPK Fertilizer?

In most cases, NPK fertilizer is chemical fertilizer (15:15:15) or (19:19:19). You can buy these in granular form, powdered form, or liquid form.

Due to their strength and concentration, chemical NPK fertilizers are administered in smaller quantities to plants. A small spoon is provided per plant using the ring method. (Ring method is placing the fertilizer in a circle around the base of a plant)

The fertilizer should be mixed with water according to the following steps:

Use one-half teaspoon of NPK fertilizer.

Add it to 2 litres of water and mix well.

Mix well and add 1/half teacup per plant per week (or 3 weeks for small plants).

You can spray it on the leaves or you can add diluted solution to the plant (not close to the roots)

Always, make sure you follow the instructions on the fertilizer label when applying it. After applying the fertilizer, water the plant immediately. Otherwise, the plant will be burned.

There is also the easiest method of throwing them on the soil. They are soluble in water. Your plant slowly absorbs NPK elements as you water it, as the NPK gradually dissolves in water.

It is also possible to purchase NPK in organic form. In soil, organic NPK can be added without worrying about quantity. NPK is present in most organic fertilizers, such as compost, vermicompost, and cow-dung manure.

What is the best fertilizer NPK?

A plant’s needs and the type of fertilizer determine the best NPK fertilizer. For some plants, the best fertilizer NPK is listed below.

1. Balanced NPK fertilizer ratio for all plants

For each type of indoor plant, use a fertilizer that has a balanced NPK ratio, secondary nutrients, and micronutrients. 

1-1-1 fertilizer,

2-2-2 fertilizer,

10-10-10 fertilizer, or

19-19-19 fertilizer

For indoor plants that have specific fertilizer requirements, you can purchase specialized fertilizers that are tailored to their needs.

2. For all fruiting and flowering plants

Early spring is the best time to feed flowers. And in the summer they should be fed every 2-4 weeks. Fertilize fruit trees spring and fall at least twice a year.

5-10-10 fertilizer, (for flower), or

10-10-10 fertilizer (for fruit)

3. Succulent 

A succulent can grow in a variety of soil conditions and compositions. Additionally, they need only light fertilizer. For most varieties with a tolerant root system, one application in late summer should be fine

1-1-1 fertilizer

5-10-10 fertilizer,

13-11-11 fertilizer,

15-15-15 fertilizer, or

14-14-14 fertilizer

4. Fiddle leaf fig 

For Fiddle Leaf Figs to thrive, they need an optimal balance of nutrients. The dark green colour of the leaves will disappear if the plant doesn’t receive enough fertilizer.

3-1-2 fertilizer,

6-2-4 fertilizer, or

balanced 10-10-10 fertilizer

5. Snake plants 

Only fertilize snake plants twice a year since they grow slowly. Fertilize them in the spring to strengthen them, and then in the fall to sustain them.

2-2-2 fertilizer,

10-10-10 fertilizer, or

20-20-20 fertilizer

6. Cactus 

For optimal growth and health, cacti should only be fertilized once or twice a year. It’s a good time to fertilize in the spring. The reason is that cacti are more susceptible to nutrient deficiencies during these periods.

1-2-2 fertilizer,

2-7-7 fertilizer,

5-10-10 fertilizer,

5-15-10 fertilizer, or

10-10-10 fertilizer

7. Peace lily

During the growing season, Peace Lilies only require feeding 2-3 times. Their growth and beauty will be enhanced by abundant primary and secondary nutrients.

2-1-2 fertilizer,

2-2-2 fertilizer, or

10-10-10 fertilizer

8. Money tree 

As often as once a month, fertilizing Money Trees is essential for their health. It ensures a steady supply of nutrients, which aids in strong leaf growth.

10-10-10 fertilizer,

18-6-11 fertilizer, or

20-20-20 fertilizer

9. Golden Pothos

If you are not getting specific fertilizer for golden pothos, then get the following NPK ratio fertilizer. You can fertilize golden pothos every 10 days in spring, twice in summer, and once in autumn.

7-3-6 fertilizer, 

8-4-6 fertilizer, or

7-4-7 fertilizer

10. Lotus

Once a month or every three weeks, feed the lotus,

10-10-10 fertilizer, or

5-10-10 fertilizer

FAQs

Q1. Why is NPK used in fertilizer?

Ans. Nitrogen, potassium, and phosphorus are necessary for plants to grow and thrive. A well-fed plant is more productive and healthier. If you don’t add fertilizer to your soil, it may not provide enough nutrients for optimal growth.

Q2. Which NPK is best for flowering?

Ans. Look for a fertilizer with a high potassium and low nitrogen content for fruiting and flowering plants. By doing this, you will encourage the growth of fruit and flowers without promoting excessive leaf growth. The production of flowers and the quality of fruits and vegetables will be poor if potassium levels are low.

Q3. Which NPK is best for root growth?

Ans. A 3-20-20 fertilizer containing 3% nitrogen, 20% phosphorus, and 20% potassium will encourage strong, healthy roots. Low nitrogen content promotes leggy green growth over rooting and flowering.

Q4. How long does it take for NPK fertilizer to work?

Ans. It takes 1-5 days after fertilizer application for results to appear.

Conclusion

It is important to include NPK in your plant’s diet for it to grow healthy and produce a good crop and flowers. If you want to apply NPK, you can dilute it in water or add it to the soil. Nevertheless, don’t forget to water your plants after fertilizing, otherwise, they will be burned.

The early spring to late summer, when your plant is actively growing, is the best time to apply NPK. Moreover, to avoid burning the plants, apply NPK fertilizer early in the morning or late at night.

There are different NPK ratios for different plants depending on the type and need of the plant. However, balanced NPK is beneficial to all indoor plants. 

In addition, some of the plants may need fertilizer rich in nitrogen if they are growing leggy. Furthermore, it is best to use a fertilizer with high potassium and low nitrogen for flowering plants.

Please feel free to ask any questions related to What is NPK fertilizer in the comment section below. I’m happy to assist you with any questions you may have. 

Related Articles

The Basics of Fertilizing Your Plants

 

No matter how hard one tries, it’s tough to transform the topic of fertilizers into lively conversation. But for all gardeners, knowledge of fertilizers and how to apply them effectively is as crucial to vigorous plant growth as knowing a plant’s hardiness zones. So in the interest of growing healthy plants, what follows is a brief discussion of the why, what, how, and when of applying these multi­vitamins.

Three prime chemical elements are found in all mixed fertilizers

N = Nitrogen promotes healthy leaf growth by stimulating the production of chlorophyll (the main chemical involved in photosynthesis—how plants convert sunlight to food).

P = Phosphorus supports the vigorous development of roots, stems, blossoms, and fruits.

K = Potassium plays a key role in helping plants digest and manufacture their foods.

 

 

Why plants need fertilizers

All of the nutrients essential to plant growth are present in the soil or are floating in the air, so what’s the point of fertilizing? The point is that not all plants can access the key nutrients found in the soil or in the air. Each soil type has its own mix of nutritional ingredients, so before considering what fer­tilizers a plant may require, we need to con­sider the soil in which a plant is growing. Activities like intensive farming, construction, and traffic can alter soil chemistry and structure, limiting the nutrients that plants can use. In some cases, the nutrients aren’t naturally there to begin with or have been leached out over time. For these reasons, we, the diggers of the dirt and keepers of the garden, must replenish, replace, or help release those elements that are beyond the reach of our plants.

When it comes to fertilizing, more does not mean better. It is possible to overfeed your plants. Too much fertilizer can damage and maybe even kill your plants. Before applying any fertilizer, it’s a good idea to have your soil tested so you can select the type and formula that suits your plants’ needs. In return, our plants will reward us with bigger flowers, bigger leaves, and bigger fruits and vegetables.

 

 

Long-term sustenance vs. fast food: Which is the right feeding choice for your situation?

 

1. Granular fertilizers deliver food to a plant slowly but have the advantage of longevity.

Broadcast application

 

This method, which covers large areas well, is used to apply granular fer­tilizers to lawns or to new beds before they are planted. The broadcast method can be done with a hand-rotary or drop spreader.

Top-dress application

 

This technique, which provides nutrients to individual plants such as shrubs and perennials, is done by hand with granular fertilizers. Simply apply the fertilizer around the base of the plant, extending to the drip line. For vegetables, place the fertilizer in a strip parallel to the plant­ing row.

2. Water-soluble fertilizers are faster acting but must be applied more frequently.

Base application

This method gives plants food while you water. Use with water-soluble fertilizers, follow the mixing instructions, and water the soil at the plant’s base with a watering can or hose attachment. This is good for feeding container plants and vegetables.

Foliar application

This approach is similar to base application, but the water is applied to the leaves rather than to the soil. It is useful when plants need to quickly absorb trace elements, such as iron.

 

 

What plants need to thrive

The three essential elements that all plants need are nitrogen, phosphorus, and potassium—or N-P-K, the proportions of which are stated as numbers on the package. For instance, a general-purpose fertilizer labeled 20-20-20 means that each chemical element—N, P, and K—contributes 20 percent by weight to the total formula. (The remaining 40 percent is composed of inert materials and trace elements.) The element percentages are offered in various proportions to suit different fertil­izer needs. If you are looking to boost flower production, you want a mix like 15-30-15, which is high in flower-developing phosphorus. If you want to green up your lawn, choose a mix like 25-6-4, which is high in nitrogen. Many fertilizers are formulated for specific plants like roses, bulbs, or vegetables. Be sure to check the label for the N-P-K ratio, as you may be able to use a general fertilizer with close to the same nutrient percentages but at a lower price.

In addition to N-P-K, most fertilizers contain traces of other elements important to plant health. Some trace elements are more important than others, but each nourishes a plant in its own way. The main trace elements in fertilizers are calcium, magnesium, iron, copper, manganese, zinc, molybdenum, boron, and sulfur. (You can usually purchase these items individually as well.) If any of these elements is lacking, a plant may show characteristic deficiency symptoms. An iron deficiency, for instance, causes chlorosis (yellow leaves with green veins), which is easily corrected with a dose of chelated iron.

There are quite a number of fertilizers available today, both organic (plant and animal derived) and inorganic (chemically derived). While most are commercially produced inorganic fertilizers, there are a few options for the organic gardener. Many rely on the old standbys—animal manure and compost—which, although organic and good for soil building, actually contain few nutrients. For flower and fruit development, bonemeal with a high phosphorus count is the organic of choice, while blood meal is a good source of nitrogen.

 

 

How to choose a fertilizer

There are two types of fertilizers available to the home gardener: granular and water soluble. Each type has advantages and disadvantages. Granular fertilizers deliver food to a plant slowly but have the advantage of longevity. Since they must be broken down by water before a plant can use them, granular fertilizers do not leach out of the soil as rapidly as water-soluble types. Water-soluble fertilizers are faster acting but more transient, which means they must be applied more frequently than the granular type.

Both types of fertilizers are effective, so the one you choose depends on whether you want to give your plants a quick but frequent fix or a sluggish but extended feeding. And for those of us gardeners who are oh so very busy (or oh so very lazy), nothing beats time-release granular fertilizers, some of which require only one application every six to nine months.

You can apply granular and water-soluble fertilizers in several ways, but be sure to follow a few general guidelines when doing so:

Avoid applying a fertilizer on windy or rainy days. This can cause it to be misplaced and ineffective.

When using a granular fertilizer, always be sure to knock the fertilizer off plant leaves to avoid burn.

Never apply a granular fertilizer when the soil is extremely dry, and water it in thoroughly after applying to prevent plant burn.

When to fertilize

Knowing when to fertilize is as important as using the right fertilizer. If you don’t apply the fertilizer at a time when the plant can use it, there’s no point in fertilizing. Most perennials, annuals, vegetables, and lawns will reward you handsomely if you feed them with a balanced granular fertilizer in early spring. Avoid fertilizing before the spring showers, however, or you will be throwing your money away, since the nutrients will simply leach out of the soil. Annuals like to be fed an additional three to four times during the growing season with a high-phosphorus, water-soluble fertilizer, while lawns benefit from a second granular application in early fall.

Trees and shrubs, especially those that flower, also like a dose of a balanced granular fertilizer in the spring and another in the fall. But remember to heed the phrase “late and light” when fertilizing trees and shrubs in autumn. Late fall is also a good time to fertilize bulbs, especially if you are planting them for the first time; a teaspoon of bonemeal added to each bulb hole will generally be sufficient.

Roses have insatiable appetites. To keep them fat and happy, feed them with a soluble fertilizer every seven days during their blooming season. “Weekly, weakly” is the feeding mantra for all roses. One final thought: Feed only well-established plants; fertilizing seeds or tiny seedlings will cause fertilizer burn.

Just remember, these guidelines on feeding are just that—guidelines. Read the package directions before scattering both food and caution to the wind.

Sandra Gorry is a horticulturalist and garden designer who lives in New York City.

All photos, except where noted: Jennifer Benner

 

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