well following on from previous advice I'm watering my courgette plants lots and am getting a fair amount of fruit growing on them. BUT.... a lot of the courgettes start off OK then seem to shrivel from the tip down. If I'm lucky the then continue and grow into a very funny shape (very thin tip but fat base) or the tip starts going yellow then brown and bit by bit the entire courgette starts rotting.
I'm watering and feeding regularly
any ideas?