Looking for to stop meldew from apairing on my grapes wile in a cold green house?

Question

Looking for to stop meldew from apairing on my grapes wile in a cold green house?

Answer 1

commercially , a fungicide spray is used ; sulpher and mancozeb(?) , sometimes called ' bordeaux mixture ' .

One ought to determine if it's downy or powdery mildew.

I do wonder about this 'cold' greenhouse- doesn't sound ideal .

Anyway , a good flow of dry air may help . As will removing all dead leaves and the like .

If you have small bunches of grapes , that flowered last month , you really do need to get some fungicde on .