I have one peach tree with curly leaf. I've read that it needs epsom salts. Does anyone have any other suggestions? Thank-you.
I use dormant oil/lime sulphur mix to spray my Peach tree when it is still dormant, shortly before budbreak.
I use fixed copper in September, before the fall rains start. That should control both Peach Leaf Curl and Coryneum Blight. I also grow two supposedly resistant varieties: Frost and Renton; and leaf curl has not been a big problem.
You can also use Lime Sulphur solution in water alone (without dormant oil) at any time of leaf development, I believe, or in dormancy. Reapply after 48 h. It will not un-curl the leaves, but will prevent the fungus from further spreading.
