This post may contain affiliate links. If you make a purchase using one of these links it means we may earn a small commission at no extra cost to you. Learn More

Fertilizing Oak Trees: When, How & Which Fertilizer To Use

The oak tree is a tree full of life; perhaps this is due to its size since it is large and has a very remarkable appearance with its wide-open canopies that extend across a landscape. An oak tree always makes me feel happy and enthusiastic when I see one because I know it has many fascinating stories to share. And I simply need to sit beneath the tree and hear all of the tales it has to share.

Oak trees don’t need much care and are simple to maintain, but bear in mind that they also require fertilization, particularly when they are young, transportation, and in certain cases, older oak trees as well.

Let’s see what I have to say about fertilizing oak trees now, and I’ll also offer you some key details regarding this instance.

When to Fertilize Oak Trees?

Similar to how we humans need to eat three times a day and supplement with vitamins, oak trees require nutrition, and fertilizers serve as their vitamins. Because of this, fertilizers aid in the trees’ accelerated growth and healthy development.

Therefore, feeding oak trees is essential if you want them to appear large and vibrant as well. However, you can’t fertilize them anytime you like because there is a certain time when they require fertilization. Additionally, we should keep in mind that mature oak trees often don’t require fertilization since the falling leaves provide the precise organic material that oak trees require.

  • To allow the trees to grow healthily in this situation, we should fertilize primarily the young oak trees and take good care of them. Oak trees that have just been planted need attention, love, and fertilizer. So it’s crucial to fertilize young oak trees.
  • Two times annually, oak trees should be fertilized. Early in the spring should be the first fertilization, followed by one in the fall.
  • To fully profit from fertilizing the oak trees, you should do so in June and July when the growth potential is at its highest.

How to Fertilize Oak Trees?

We must also be aware of how to fertilize a plant to do it effectively and without causing harm. Because various plants require different fertilizing techniques and fertilizers.

Knowing how to fertilize oak trees is important for the growth of the tree, therefore we should be extremely careful while doing so. In this situation, we must pay close attention to the fertilizer we are using, particularly its NPK ratio.

  • Therefore, the first thing you need to do is pick the fertilizer that best meets the requirements of your soak tree. The ideal fertilizer to use is one with a 12-4-8 NPK ratio, which means it includes 12% nitrogen, 4% phosphorous, and 8% potassium. As you can see, nitrogen plays a crucial role in oak tree health.
  • Then, once you’ve decided which fertilizer to use, you should carefully study the fertilizer’s directions so that you can apply the fertilizer in the appropriate quantity and manner.
  • If the fertilizer is granular, surround the plant with 2 lbs. of fertilizer for every 100 square feet of the planting bed.
  • When applying liquid fertilizers, water should be diluted with the fertilizer before use. To ensure that nutrients are dispersed equally, evenly spread the fertilizer.

Best Fertilizers For Oak Trees

Generally speaking, using high-quality fertilizer is the best choice. Naturally, you must also consider the NPK ratio that Oak trees require while selecting your fertilizers. You may use many fertilizers, but I’ve compiled a list of the best ones you should think about purchasing at that time. I’ll now present you to the greatest fertilizers, so allow me.

BioAdvanced 12-Month insect Killer and Fertilizer

This is a game-changer for young trees since insects and pests may harm the tree. It is not simply a fertilizer; it is also a bug repellant. It guards the tree against pests including Japanese beetles, aphids, and caterpillars.

This slow-release fertilizer feeds for up to 12 months; it has an NPK ratio of 2-1-1 and is sufficient for a variety of shrubs, tiny potted trees, and young transplants.

Check Price On Amazon


Fertilome Root Stimulator & Plant Starter Solution

The ideal fertilizer to use for freshly planted trees, especially oak trees, has hormones and nutrients that encourage root development. This fertilizer is simple to use; all you have to do is combine it with water and apply it to the oak tree.

This fertilizer has a 4-10-3 NPK ratio. Strong growth and greener leaves are guaranteed with the use of this fertilizer.

Check Price On Amazon


Jobe’s Fertilizer Spikes for Trees and Shrubs

This fertilizer is best for trees, shrubs, and oak trees in particular. Apply this fertilizer in the early spring and late fall for the greatest results. You won’t have to spend a lot of time feeding your oak tree because this fertilizer is so simple to apply. This fertilizer’s NPK ratio is 16-4-4, which is perfect for your oak tree.

The oak tree will be fed by this slow-release fertilizer for the whole growing season. It doesn’t include any dangerous compounds, which is crucial for the microorganisms in the soil and the neighboring plants. When using this fertilizer, all you need to do is bury them close to the base of the trunk and thoroughly hydrate the soil.

Check Price On Amazon


Signs Of Overfertilization

I have a lot of work to accomplish today, therefore it is time to wrap up this essay because there is still plenty to write. As always, I’ve done my best to provide you with all the information you need to know about how and when to fertilize oak trees.

Knowing how to fertilize your oak tree correctly is crucial to the growth of the trees since improper fertilization might harm your oak tree. I want to draw your attention to the fact that you should exercise extreme caution and attempt to prevent overfertilizing the oak tree.

Final Words

It is time to conclude this article, since there are many more to write, so I have a lot to do today. As always, I have tried to do my best and provide you with all knowledge you have to know about how and when you should fertilize oak trees.

Knowing the proper way of fertilizing you oak tree plays a big role in the development of the trees, since by doing the fertilization in wrong way you may cause damage to your oak tree. One thing that i want to point out is that you should be very careful and try to avoid overfertilizing the oak tree.

Have a nice day, everyone!

Further Reading

Immediately after you’ve finished reading this post. I know many of you would like to read even more interesting content. Therefore, read this post if you have vines on your trees and are unsure of how to get rid of them. To find out how to get rid of weeds without injuring your grass, see another article.

Read this article to discover the reasons why azalea leaves become brown. In order to save your fiddle leaf fig if it is in difficulty, read this article.

Ella Holmes

About Us

FlowerPictures is a website dedicated to the most beautiful things in life - PLANTS!

Its run by enthusiast gardeners that have years of experience.