On Fri, 31 Jul 2015 10:40:28 +0100, David Rance wrote:

Vines should be sprayed with bordeaux mixture (and dithane for powdery
mildew if you can still get it) once every two to three weeks from May
onwards until about three weeks before the grapes are ripe, even though
you may not see any evidence of mould. Once you can see it, it's usually
too late, as I know to my cost.

There sure is a lot of mould this year, though...



--
Gardening in Lower Normandy