Learn more about diseases that can affect trees and shrubs
Image by Britney Accettella, CCE Suffolk
Trees and shrubs can be affected by numerous diseases
Trees and shrubs can be attacked by multiple diseases
Diseases of Trees & Shrubs
Anthracnose
Apple Maggot & Apple Scab
Arborvitae Problems
Black Knot
Cedar Apple Rust
Cultural Problems of Plants
Diagnosing Rhododendron Problems
Disease Resistant Ornamental Trees
Fire Blight
Flowering Dogwood Problems
Juniper Twig Blight
Leucostoma Canker of Spruce
Maple Decline
Sooty Mold
Tar Spot of Maple
Tip Blight of Pines
Verticillium Wilt
Last updated May 10, 2021
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Outdoor Mushroom Farming Series
Thursday, July 17
5:00 PM - 7:00 PM -
The Night Shift: Creating A Garden to attract Nighttime Pollinators
Friday, July 18
1:00 PM - 2:00 PM -
“So You Want to Be a Master Gardener Volunteer?” – Info Session for Prospective Applicants
Monday, August 18
2:30 PM - 3:30 PM -
Nature Calls: Conversations from the Hudson Valley at the International Master Gardener Conference
Tuesday, August 26
4:45 PM - 5:45 PM -
Garlic, the Stinking Rose: Origins, Lore, and Biology
Saturday, September 6
10:00 AM - 12:00 PM
