Skip to Content

What Is 21-7-14 Fertilizer Used For? | Things You Must Know!

Sharing is caring!

Are you wondering what 21-7-14 fertilizer is? And what is 21-7-14 fertilizer used for? Can it be used in gardens as well as lawns?

If these queries are on your mind, we are here to help!

The first number in 21-7-14 fertilizer represents the nitrogen content; the second represents phosphorus content, and the third represents potassium content.

The order is always listed as such.

This specific fertilizer is excellent for many plants, including grass, vegetables, flowers, and fruits, etc. 21-7-14 fertilizer is good for plants that need various nutrients.

However, consulting a specialist is still the best option.

In general, 21-7-14 fertilizer has been shown to generate stronger stems, greater root development, and increased plant growth.

Read this article till the end to find out what is 21-7-14 fertilizer used for.

A man applying fertilizer—what is 21 7 14 fertilizer used for
What is 21-7-14 fertilizer used for? – Image via Antony Trivet.

What Is 21-7-14 Fertilizer?

In 21-7-14 fertilizer, the three main plant nutrients: nitrogen, phosphorous, and potassium, are combined in a 21:7:14 ratio, respectively.

  • 21-7-14 fertilizer contains 21% nitrogen, 7% phosphorus, and 14% potassium by weight.
  • The three main plant nutrients, nitrogen, phosphorous, and potassium, are well-balanced in this fertilizer. These nutrients are important for the development and growth of plants.
  • The fertilizer 21-7-14 is frequently used to supply nutrients to lawn grass and garden plants.
  • You can apply this fertilizer on 21-7-14 in both new and old lawns.

Now, let us head to our main topic.

What Is 21-7-14 Fertilizer Used For?

So, what is 21-7-14 fertilizer used for?

Do you know? You can use 21-7-14 fertilizer on various plants to aid the growth of fruits, flowers, or vegetables.

You can conduct a soil test to determine the cause if you discover your plants are deficient in nutrients.

  • If the specialist advises using 21-7-14 fertilizer, you should apply it as he directs.
  • If your plants are deficient in nitrogen, the 21-7-14 fertilizer can assist in restoring the nitrogen level since it contains a significant amount of nitrogen.
  • It contains a considerable portion of potassium and phosphorus too. These two nutrients will support healthy growth in your plant.
  • A stronger root system and better stems can be developed using the 21-7-14 fertilizer.

Finally, your harvest gets a boost from the use of this fertilizer.

When to Apply 21-7-14 Fertilizer?

Timing is everything when applying fertilizers.

Using the proper fertilizer at the right time is essential to maintain a healthy and thriving lawn. Similarly, you will not receive satisfactory results if you use too much or too little fertilizer.

Therefore, in addition to proper timing, you must also ensure correct application to receive the best results from a fertilizer. Depending on the type of plant you are fertilizing, you should decide when to administer 21-7-14 fertilizers.

The best times to apply 21-14-17 fertilizer are spring and early summer. Fertilize between April 15 and May 7 for spring applications and between June 15 and June 30 for use in the summer. And fertilize between September 1 and September 15 for fall applications.

The 21-7-14 label is, however, only a general ratio; it is not always constant.

The nutrition content could alter depending on a variety of variables. Additionally, your plants’ nutritional deficiency symptoms may manifest at a different period than those of other plants.

Watch this video to learn how to assess soil for nutrient deficiency:

What is 21-7-14 fertilizer used for? | How to Test Your Soil for Nutrients – YouTube

How to Use 21-7-14 Fertilizer?

Depending on the kind of plant, tree, or shrub, there are many ways to apply 21-7-14 Fertilizers. For best results, make sure you stick to the instructions on the packaging.

For Plants

You will most frequently mix the 21-7-14 fertilizer with water to make a mixture with which you will water your plants.

The most typical mixture is one part of the product to twelve parts of water.

For Shrubs or Trees

Use granular fertilizers wherever possible to fertilize young, established trees or bushes.

  • For best effects, apply the granular fertilizer evenly at the base of the shrub or tree trunk.
  • The best time for fertilizing bushes is in the winter or spring, and you should do this between February and May.
  • The quantity will change depending on the size of the tree or shrub to which you apply the fertilizer.

Just keep in mind not to overfertilize the plants.

For Grasses

There are a few options if you need lawn fertilizer but are unsure how to use it.

21-7-14 fertilizer in the granular form has the simplest spreader settings. So, using granular form fertilizer prevents you from sprinkling your lawn with the water mixture.

On the other hand, if you apply winter fertilizer to grass, you must do so between November 15 and December 7. Your grass will receive the nutrients from this fertilizer to become healthy and lush.

You must fertilize your grass frequently if you want it to have the best looks.

Is 21-7-14 Fertilizer the Best?

A fertilizer with a high content of nitrogen, phosphate, and potassium is indeed the best fertilizer.

  • This fertilizer will give your plants the nutrition they need to develop into healthy seedlings.
  • However, fertilizers come in a wide variety of brands, so it is critical to do your research to discover the one that best suits your requirements.
  • We advise consulting your local expert regarding the use of 21-7-14 fertilizer. When your plants want a 21-7-14 fertilizer, they will recommend you use it.

That is all for today, my friends. Let us head toward the conclusion.


As you have come this far with us, you now know what 21-7-14 fertilizer is and what is 21-7-14 fertilizer used for.

Not only that, but now you see this mix of nitrogen, phosphorous, and potassium provides good nutrition to your plants and your entire garden. You can always consult with a local expert from 21-7-14 fertilizer Home Depot, and once you know how your plant reacts to nutrition lacking, you can always make the best call.

You are good to go if you know the appropriate amount of fertilizer and use it at the correct time of the year for your plant, shrubs, or grass.

This way, you can see your plant thriving year-round.

Happy gardening!