Hello Peter,
My peach tree leaves are curling and one of the preventative recommendations that I’ve seen is to apply an onion spray. Can you help me with knowing what that is?
thank you,
Amy Thomas
Peter Bowden Answered question May 23, 2024
I have never heard of onion spray. A copper based fungicide is the usual preventative spray. Bring some leaves in and let our people take a look.
Peter Bowden Answered question May 23, 2024