Widespread black knot
We have a large double lot with many trees and hedges. We have what I think is black knot. We have pruned what we can but there are too many tree involved. Help!
Certified GKH Gardening Expert
Are these fruit trees that are infected?
Black Knot is most commonly found in fruit trees such as plums and cherries and less commonly peach and apricots.
I would recommend having a qualified Arborist examine the trees and shrubs to determine the exact fungus or disease your dealing with.
Contact your local County Extension Office for a referral of a qualified professional.
Here is a link to help locate your closest office and some more information on Black Knot.