I have three chilli plants in my greenhouse together with peppers and other plants which are all doing well. The upper leaves of the chillies are curling and some dropping off. They have flowers but some don't look too good. I've grown chillies indoors before but this is the first time n the greenhouse. Any ideas why the leaves are curling ?? They haven't been allowed to dry out, but equally I've been trying not to overwater - difficult at the moment as one moment it's hot in there and the next it's cooling down. Tomatoes, cucumbers, etc all doing fine.