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Can anyone please tell me what's wrong with my pecan?
(aussie.zone)
My pecan started getting brown tips on the leaves at the end of it's growing season the year before last and it's progressed to the emerging spring leaves.
That will help, generally wood ash is about 5 percent potassium. Don't overdo it and try to fix it with one application - you could alter the pH in the immediate root zone in a way the pecan won't appreciate.