EAB Treatment in St. Cloud, MN
St. Cloud's beautiful ash trees, from the Beaver Islands to Munsinger Gardens, are under threat from the Emerald Ash Borer. Our certified experts provide targeted, effective treatments to protect your property's most valuable natural assets.
Get a Free QuoteProfessional Emerald Ash Borer Treatment for St. Cloud Homes & Businesses
The Emerald Ash Borer (EAB) is an invasive pest causing widespread damage to ash tree populations across Central Minnesota, and St. Cloud is no exception. From the historic neighborhoods around Lake George to the sprawling campuses of St. Cloud State University, our significant ash canopy is at high risk. Losing these mature trees not only diminishes our city's natural beauty but also impacts property values and local ecology. Proactive treatment is the only way to save them.
At Timber & Native, our approach to EAB treatment is rooted in science and executed by licensed professionals. As an ISA Certified Arborist and MN Licensed Pesticide Applicator, we use proven trunk injection methods that deliver insecticide directly into the tree's vascular system. This targeted application is safe for the surrounding environment, including the nearby Mississippi River watershed, while effectively eliminating EAB infestations and protecting the tree for up to two years. We provide comprehensive assessments to determine if your ash trees are candidates for treatment and help you comply with any local ordinances in Stearns County regarding infested tree management.
Get a Free Consultation in St. Cloud
Contact our ISA Certified Arborist for a free on-site evaluation of your St. Cloud property.
The Treatment, Step by Step
How We Treat Ash Trees for EAB
We protect ash trees with direct trunk injection of emamectin benzoate — the most effective, lowest-impact method available. Here is exactly what happens when our ISA Certified Arborist and Licensed Pesticide Applicator treats a tree on your property.
01 Staging the Injection System
Our ISA Certified Arborist measures each ash tree at diameter breast height (DBH) and meters the exact dose of emamectin benzoate for its size. A sealed, low-pressure injection kit is staged at the root flare — no spraying, no soil drench, and no drift onto your landscape.
02 Drilling the Injection Ports
Small, shallow ports are drilled into the trunk flare — the zone of fastest uptake into the tree’s vascular system. Spacing the ports evenly around the base ensures the treatment is carried to the entire canopy, not just one side of the tree.
03 Setting the Injection Plugs
Self-sealing plugs are seated into each port and connected to the dosing lines. This creates a closed system that delivers the insecticide directly inside the tree, keeping it away from pollinators, pets, and surrounding soil.
04 Direct-to-Vascular Delivery
The tree’s own vascular system draws the emamectin benzoate up into the canopy, where it kills EAB larvae feeding under the bark. A single trunk injection protects the tree for two to three years before retreatment is needed.
Frequently Asked Questions
My property is near the Beaver Islands Trail. Are the EAB treatments safe for the river ecosystem?
Yes, absolutely. We use a trunk injection method that delivers the treatment directly into the tree's vascular system, minimizing any environmental exposure. This makes it a safe and responsible choice for properties near the Mississippi River and other sensitive ecological areas in St. Cloud.
I've heard EAB is a big problem in St. Cloud. Is it too late to save my ash tree?
Not necessarily. If the tree's canopy is still at least 50% healthy, it can often be saved with professional treatment. Our ISA Certified Arborist can assess your tree's condition and recommend the best course of action to protect it from further EAB damage.
Do I need a permit from the City of St. Cloud to treat or remove an ash tree on my property?
While you don't need a permit for treatment, the City of St. Cloud does have specific guidelines for the removal and disposal of EAB-infested wood to prevent further spread. As a MN Certified Tree Inspector, we are fully versed in these regulations and can ensure the process is handled correctly and legally.