Stop Inchworms Before They Strip Your Trees Bare
Spring inchworm outbreaks on Long Island can defoliate mature oak, cherry, and maple trees within two to three weeks. Our Dipel (Bt) treatments are applied at the precise window when larvae are small and feeding — delivering maximum effectiveness with the most environmentally benign tool available.
Understanding the Risk on Long Island
Local conditions in Suffolk County create specific pest pressures that homeowners shouldn’t underestimate.
Rapid Defoliation
A moderate inchworm outbreak can remove 80–100% of a tree’s leaf canopy in under three weeks. While healthy trees typically refoliate, repeated defoliation over successive seasons weakens trees and increases mortality risk.
Mature Tree Vulnerability
Large ornamental oaks, cherries, and maples that took decades to establish are the primary targets of spring cankerworm and loopers. These trees represent significant landscape and property value.
Narrow Treatment Window
Dipel (Bt) is most effective on early instar larvae — typically a 2–3 week window in April–May on Long Island. Missing this window significantly reduces treatment efficacy and may require multiple applications.
Biological, Not Chemical
Bacillus thuringiensis var. kurstaki (Btk) is a naturally occurring soil bacterium that is specifically toxic to caterpillar larvae and harmless to humans, pets, birds, beneficial insects, and the surrounding ecosystem.
How We Treat Your Property
Every application follows a structured, science-backed process — no guesswork, no unnecessary treatments.
Early Spring Monitoring
We begin monitoring for inchworm egg hatch in early April. Timing varies by year and microclimate — we track degree-day accumulations to identify optimal treatment timing for your specific location in Suffolk County.
Dipel Application
Dipel (Bt) is applied to leaf surfaces and branch tips when larvae are in early instar stages (1st–3rd). Caterpillars ingest the Bt protein during feeding, which disrupts their gut lining and stops feeding within hours.
Post-Treatment Assessment
We revisit treated trees 7–10 days post-application to assess larval mortality and canopy condition. In high-pressure years, a second application may be recommended for trees with persistent populations.
All-Natural. Every Time.
Every product we use in our inchworm control program is plant-derived, naturally occurring, or OMRI-listed for organic use. We made a commitment when we started this company: no synthetic pyrethroids, no organophosphates, no compromise on the health of your family or Long Island’s ecosystem.
Complete Your Yard Protection
Our services work best together. Many Long Island properties benefit from combining two or three programs for full seasonal coverage.
Don’t Miss the Inchworm Treatment Window
The effective treatment window is just 2–3 weeks in spring. Call now to get on our monitoring list so we catch the hatch at exactly the right moment.
631-265-5252