My first attempt at growing courgettes ( in the greenhouse ) is going
badly wrong. There is a little bit of white mould on the leaves, though
nothing too serious, but every time a courgette gets going, the flower end
goes yellow, then brown and soft, then rot proceeds back towards the base,
the courgette eventually ending up as a soggy rotten blob covered in grey
mould. Is there an effective cure?

thanks,

Andy.