Crabapple and snow crab scab
Asked April 18, 2017, 12:54 PM EDT
Is it too late to spray crabapple and snow crab trees for scab?
Dakota County Minnesota
Fungicides must be applied preventively to successfully manage apple scab. Because spores are released so early in the growing season, fungicide sprays must begin when the first green leaf tips emerge in spring. Sprays should be repeated until petal drop for crabapple.