what's this on my marrow leaves?

i've just looked at my marrows and noticed a lot of the leaves have got some sort of mildew/ mold growing on the leaves.

we've had a plentiful crop them (prob too plentiful) and still at least half a dozen almost ready to be harvested.

will the cause of this leave mould get worse and more importantly will it stay in the soil and come back and affect  the crop next year?

or would it be better to get rid of the plants now as i have enough marrows in storage? if this is the case would i be better not to put the plants in the compost?

thanks for any opinions.



 

My courgettes get mildew every year too - doesn't seem to stop them producing courgettes

It is just what happens to marrow/squash family plants at the end of their cycle - normally in dry times it gets worse..