Using Dormant Oil
Should I use a dormant oil spray on my trees this year?
Dormant oil spray is used to control insects that overwinter on trees. They kill overwintering insects such as mites, aphids or scales. If these pests were not a problem last year there is no reason to treat. Unnecessary spraying wastes your time, money and can be harmful to your plants and the environment. Be sure to read and follow label directions before using any product.
Related
Upcoming
Events & Webinars
August 6-16, 2026
Wisconsin State Fair
We Energies Energy Park, West Allis, WI
More information
August 29, 2026
Composting 102
Milwaukee Public Library - East Branch
Register here
Sept. 3, 2026
FREE WEBINAR:
Tree Planting and Care
Register here
Sept. 11, 2026
Illinois State Master Gardener Conference
Rockford, IL
Register here
Sept. 12, 2026
2026 Knowledge in Bloom Conference
Urban Ecology Center, Milw., WI
Register here
Sept. 17, 2026
FREE WEBINAR:
Fall Landscape Care and Planting
Register here
Sept. 26, 2026
Pruning Hydrangeas & Other Shrubs
Pasquesi Home & Gardens, Lake Bluff, IL
Oct. 6, 2026
Upper Midwest Invasive Species Conference
La Crosse, WI
Register here
WATCH ON-DEMAND WEBINARS
MORE UPCOMING EVENT DETAILS
Book an Appearance
Sign up for Melinda's free newsletter for a chance to win a Midwest Gardener's Handbook, 2nd Edition.
ENTER NOW
