The Benefits of RootBoost in the Spring and Fall: An Arborist’s Guide to Deep Root Nutrition

As arborists, we often see trees as the silent anchors of our landscapes. They provide shade, beauty, and value to our properties. However, in the rugged urban environments of the prairies, our trees are often under significant stress. Between compacted soils, nutrient competition from turfgrass, and the extreme temperature swings of our seasons, trees need more than just water to thrive—they need a specialized health plan.

One of the most effective tools in our plant health care arsenal is RootBoost. This isn’t your standard hardware-store fertilizer; it is a professional-grade, deep-root feeding system designed to nourish trees from the bottom up.

In this guide, we will explore why RootBoost is a game-changer for your landscape, why timing matters in the spring and fall, and how this science-backed approach ensures your trees stand tall for generations.

What is RootBoost?

At its core, RootBoost is a professional deep root fertilization treatment. Unlike traditional granular fertilizers that are scattered on the surface, RootBoost involves a high-pressure liquid injection of a patented nutrient formula directly into the soil.

When a Green Drop ISA-Certified Arborist performs a RootBoost treatment, they use a specialized probe to inject the solution between 6 and 12 inches underground. This is the “feeder root zone”—the precise area where tree roots are most active in absorbing water and minerals.

The Science of Deep Root Injection

In nature, trees grow on forest floors covered in decomposing organic matter. In our backyards, we rake away leaves and plant thick grass. This creates a nutrient deficit. RootBoost solves this by:

• Bypassing Competition: Delivering nutrients past the thirsty roots of your lawn.
• Aerating the Soil: The pressure of the injection helps break up compacted soil, allowing oxygen to reach the roots.
• Customized Nutrition: Our patented formula is specifically balanced for the needs of woody plants (trees and shrubs), not just grass.

The Two-Season Strategy: Why Spring and Fall?

We often describe RootBoost as the “bookends” of the growing season. To maximize the health of your canopy, we recommend a bi-annual application.

1. Spring: The Great Awakening

As the ground thaws, trees exit their winter dormancy. This transition requires a massive amount of energy. Trees must simultaneously push out new leaves, develop flowers, and expand their root systems.

Applying RootBoost in the spring provides an immediate “fuel-up.” It ensures that the essential nitrogen, phosphorus, and potassium are available the moment the tree needs them. This leads to a more robust flush of foliage and better fruit production.

2. Fall: Fortifying for the Freeze

Fall treatment is arguably the most critical for survival in our climate. As the days shorten, trees begin “winter hardening.” They stop growing upward and start focusing all their energy downward.

A fall RootBoost treatment ensures the tree has the nutrients required to strengthen cell walls and store energy. These excess nutrients are tucked away in the root system, becoming rapidly available the following spring. It’s the ultimate insurance policy against winter dieback.

What RootBoost Does for Your Trees

When you invest in a RootBoost program, the results are visible both above and below the ground.

Promotes Strong Root Development

A tree is only as strong as its foundation. By placing nutrients 6–12 inches deep, we encourage roots to grow deeper into the soil profile. This makes the tree more stable and better equipped to find water during summer droughts.

Builds Disease and Pest Resistance

A hungry tree is a stressed tree, and a stressed tree is a magnet for pests like aphids or diseases like Black Knot. RootBoost improves the tree’s overall immune system. Think of it as a multivitamin that helps the tree defend itself naturally.

Enhances Aesthetic Beauty

We all want a “picture-perfect” landscape. RootBoost produces:

• Thicker, brighter leaves: Higher chlorophyll production leads to richer greens.
• Improved Aeration: The physical process of injection reduces soil compaction, letting the “soil breathe.”
• Vibrant Foliage: Better nutrient uptake translates to more spectacular fall colors.

Why RootBoost is Better Than Surface Fertilizing

Many homeowners ask, “Can’t I just use the fertilizer I put on my lawn?” The short answer is no.

1. The Grass Tax: Grass is a “nutrient hog.” If you broadcast fertilizer on the surface, the turfgrass will consume up to 90% of it before it ever reaches the tree roots.
2. Targeted Delivery: Surface fertilization encourages shallow root growth. RootBoost targets the root system directly, encouraging proper, deep growth patterns that protect the tree from windthrow and drought.
3. The Formula: Lawn fertilizers are often too high in nitrogen, which can “push” excessive top growth at the expense of root health. RootBoost is a balanced, slow-release formula designed for the longevity of the tree.

Is Your Tree a Candidate for RootBoost?

While every tree can benefit from professional nutrition, RootBoost is especially “Great For”:

• Stressed or Thinning Canopies: If your tree has small, pale leaves or visible dieback at the tips of the branches.
• New Plantings: To help young trees establish themselves in tough urban soil.
• Harsh Environments: Any tree living through a prairie winter needs the fortification that fall fertilization provides.
• Preventative Care: It is much cheaper to keep a tree healthy with RootBoost than it is to treat a massive pest infestation or remove a dead tree.

The Green Drop Difference: Expert Care

At Green Drop, we don’t believe in a one-size-fits-all approach. Our treatments are rooted in science and delivered by the best in the business.

ISA-Certified Arborists

We pride ourselves on having the largest number of International Society of Arboriculture (ISA) Certified Arborists in a single company, including Board-Certified Master Arborists. This means the person evaluating your tree understands its biology, the local soil conditions, and the specific pests common in your neighborhood.

Integrated Pest Management (IPM)

RootBoost is part of our broader IPM philosophy. We don’t just spray chemicals; we use science-backed methods to create a healthy ecosystem. By focusing on soil health through RootBoost, we reduce the need for more aggressive chemical interventions later.

Customized Per Species

An Oak has different needs than a Spruce. Our arborists customize the application based on the species, age, and location of your trees, ensuring they get exactly what they need to thrive.

Invest in Your Vertical Assets

Your trees are more than just part of the yard; they are vertical assets that grow in value over time. However, without the right nutrients, that value can quickly wither.

By “bookending” your season with RootBoost in the spring and fall, you are providing your trees with the fuel they need to grow and the armor they need to survive.

Ready to give your trees a boost? Contact Green Drop today to schedule a consultation with one of our ISA-Certified Arborists and see the difference that professional RootBoost deep root fertilization can make for your landscape.