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Notice the leaf curl. This huge cola accidentally broke and fell. I placed it up, appears to cope okay after about one day. Seems that lowering the ph took some strain off of them
I would like some comments about these yellowing leaves on one cola and also the upward curled leave edges. I am not sure of the cause and relation of these signs
The leaves that appear to be pointing up are fine, but the leaves with discolored edges are a classic sign of potassium deficiency. The slight canoeing is probably just from a really warm day in the past few days, I wouldn't worry about that.