[mdjlucan]

since we've had a lot of rain wot is this on the cucumber leaf looks like mildew or mould do i treat it with wot

[Pompey Spud]

You have downey mildew.

All the squash/cucurbits family get this in the end.

Cut off all affected leaves and dispose of.

Keep the roots well watered. Encourage good air flow round the plant.

Spraying the leaves with diluted milk helps in a 10:1 ratio.