Dutch Elm Disease - Notice of Basal Spraying

As part of a Dutch Elm Disease management strategy, the City Of Morden will be contracting Green Drop Tree Care to basal spray targeted Elm trees in your area. 

Tree Health Care Technicians may require access to your property to basal spray any American elm trees on your property. 

Basal spraying operations will be conducted in August 2021 

All Tree Health Care Technicians will be driving vehicles with Green Drop company logos and wearing a hi-vis safety vest with photo ID. 

If you have any questions, please email or call with inquires to: 

Green Drop Tree Care 
204-790-5234 
trees@greendrop.com 

City of Morden Parks & Urban Forestry Department
204-362-3999
sdias@mymorden.ca


Q. What is Dutch elm disease? 

A. Dutch elm disease is a fungal disease that blocks water movement in elm trees leading to the death of the tree. 

Q. Why should I basal spray my elm trees and how is it done? 

A. Basal spraying refers to spraying the bottom half metre of the trunk of all your elm trees with an insecticide containing chlorpyrifos. This prevents the overwintering of elm bark beetles, which may be carrying Dutch elm disease fungal spores. A 0.5% chlorpyrifos solution should be thoroughly sprayed into the cracks and crevices and around the root flare. Apply any time during the fall and reapply every one to two years. 

Q. What else can be done to protect our American Elm trees? 

A. Prompt detection and removal of diseased elms is an important step of any DED management program. Promptly removing and disposing of elms dying from Dutch elm disease is the key to effectively managing Dutch elm disease on a community-wide basis. Elm tree injections are an option for those who wish to protect healthy, high-value elm trees on their property. 

For more information on Dutch Elm Disease please visit: