Our fruit trees have young fruit on them and we have leaf curl. We sprayed just on budding but it has not helped. Can we spray now, as it has spread to all of our stone fruit trees? Thank you, Pat Inglis.
Certified GKH Gardening Expert
As explained in the following article, the most effective time to spray is just after the leaves have fallen in the fall, and again during the budding period:
The article also discusses effective fungicide products for this disease.