EAB Treatment in Alexandria, MN
Protect your Alexandria ash trees from the destructive Emerald Ash Borer. Our ISA Certified Arborists provide proven trunk injection treatments to preserve your shoreline and boulevard canopy.
Get a Free QuoteEmerald Ash Borer Treatment in Alexandria
Emerald ash borer is a serious and growing concern for property owners across Alexandria and Douglas County. Minnesota's statewide EAB quarantine means ash trees throughout the region are at risk, and Alexandria carries a heavy load of mature green and black ash — shading lakeshores along Lake Carlos, Lake Darling, and Lake Le Homme Dieu, lining downtown boulevards near Broadway Street, and bordering the Central Lakes Trail. Left untreated, EAB can kill a healthy ash within a few years, with real consequences for property values and shoreline canopy.
Timber & Native is your west-central Minnesota ISA Certified Arborist team, dedicated to protecting the Alexandria lakes-country urban forest. We use the latest trunk injection technologies and a science-based, MN Licensed Pesticide Applicator approach to manage EAB effectively. We understand the specific challenges facing ash near Lake Carlos State Park and throughout Douglas County, and we are committed to preserving your trees for years to come.
Get a Free Consultation in Alexandria
Contact our ISA Certified Arborist for a free on-site evaluation of your Alexandria 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
Are ash trees in Alexandria at risk for Emerald Ash Borer?
Yes. Minnesota is under a statewide EAB quarantine, and ash trees across Douglas County are at risk. Alexandria has heavy mature green and black ash on lakeshores around Lake Carlos, Lake Darling, and Lake Le Homme Dieu, plus ash lining city boulevards. We recommend proactive trunk injection to protect valued ash before infestation causes irreversible decline.
What is the EAB treatment process and how long does it take?
Our EAB treatment uses a trunk injection of a specialized insecticide that protects the tree from the inside out. The process is quick — typically less than an hour per tree — and provides protection for up to two years. For Alexandria's lakeshore and boulevard ash, we recommend treating in spring or early summer for best uptake and results.
Why should I choose Timber & Native for EAB treatment in Alexandria?
Timber & Native brings ISA Certified Arborist (SO-6647AU) expertise and a MN Licensed Pesticide Applicator (#20266038) to every job. We are fully licensed and insured, our treatments follow the latest research, and we understand the conditions facing ash along Alexandria's chain of lakes — making us a trusted choice for EAB protection in Douglas County.