Is Deep Root Fertilization Necessary?

As a homeowner, you may have heard of deep root fertilization before. It’s a gardening technique that has been around for years to help trees, shrubs, and other plants receive the essential nutrients they require. However, if you’re wondering if it’s necessary to do deep root fertilization and what it involves, you’ve come to the right place. In this blog, we’ll explain everything you need to know about deep root fertilization and what benefits it can provide for your beloved trees and shrubs.

What is deep root fertilization?

Deep root fertilization involves injecting fertilizer directly into the soil beneath the tree roots while providing water and air to the roots. Typically, the procedure is performed in the fall or spring when the ground is not frozen. Fertilizer is delivered to the roots through a tube system that allows the fertilizer to penetrate deeply into the soil. This technique helps provide a more extensive and efficient root system while encouraging new growth.

Why is deep root fertilization necessary?

First and foremost, deep root fertilization ensures that the tree receives the required nutrients to stay healthy and robust. If you compare it to the surface application of fertilizer, which is not as effective as deep root fertilization since it only treats the top-level of the soil. The injected fertilizers penetrate deeper into the soil, increasing the tree’s nutrient uptake capacity. Furthermore, deep root fertilization also helps promote water penetration and nutrient circulation throughout the root system, boosting overall tree health and vitality.

How often should you do it?

The principle of deep root fertilization is to ensure that the tree gets the essentials at regular intervals. The frequency of deep root fertilization falls into a cycle, which is every two to three years. If there is any disease or insect infestation, the treatment may need to be applied more often. It’s best to consult a certified arborist to determine how often the deep root fertilization needs to be performed based on the specific tree and soil conditions.

Are there any risks to deep root fertilization?

Generally, deep root fertilization is safe. However, there can be some risks depending on several factors. If the injection process is not done correctly, it may cause soil compaction, which results in root damage or reduced tree health. Moreover, over-fertilization and chemical runoff can cause soil contamination and negatively impact the surrounding environment, which can be harmful to plants, groundwater, and nearby streams. Thus, make sure to hire certified arborists who can perform the deep root fertilization safely.


Deep root fertilization is a gardening technique that is worth doing if you want your trees and shrubs to thrive. Deep root fertilization promotes healthy root growth, increases nutrient uptake for more vibrant tree growth, and helps improve overall plant health. However, it’s crucial to understand that deep root fertilization is not necessary for every plant. It’s best to contact a certified arborist that will assess your trees and soil conditions to determine what’s best for them.

By trusting HiLow Pest Control for deep root fertilization services, you can rest assured that your trees and shrubs will receive the nutrients they need to stay healthy and robust. Our expert arborists will provide safe injection procedures, ensuring that there are no risks of soil compaction or chemical runoff. Moreover, our team offers reliable advice and solutions to any of your tree care needs. Reach out today for more information about deep root fertilization services!