Hi everyone, Firstly can I apologise my being a bit naive on this, i'm posting on behalf of my grandad who has a problem in his allotment: He has a plum tree which is producing rock solid plums, they're literally hard enough to stand on. Does anyone know what is happening? Is it some kind of disease? The tree is right next to an apple tree which occasionally picks up similar problems if that helps. Many thanks, Scott (& Grandad!)
