I planted my squashes (Courgette, Pumpkin and Butternut) out about two weeks ago but the leaves are turning yellow. I have noticed this before straight after planting but they seem to be getting worse. They were hardened off for about ten days prior to planting so they should be recovering from any shock by now. We have had a lot off rain but I thought squashes loved this. I planted them in slightly heaped fashion with a spade of manure in each hole. What does yellowing of the leaves signify?