Q.Should Burning Black Knot Fungus Only Be Done In Freezing Temps?
Can I burn black knot fungus infected limbs in warm weather without risking the spread of spores? Also, between burning and burying, is one more effective or otherwise better practice than the other? I live on the edge of a large wooded area, and my burn area is about 25 feet from any trees.
Certified GKH Gardening Expert
It is best to prune black knot fungus when the tree is dormant, so you would be burning the branches in winter. Since you are past winter, you could bury the pruned limbs.