Half The tree rapidly wilted and all the leaves and fruit fell off, other half healthy, but it’s spreading. Any ideas what it could be?
Look up verticillium wilt. I think that’s what your tree is getting.
I think you’re right. Looks like there’s no cure either. One source was saying to apply ammonium sulfate?
I wonder if this is the same disease that suddenly killed my kiwi vines in another part of the garden.