Paul Glennon asked 14 years ago
My neighboring allotment has potato blight, I have tomatoes in bags in an open tunnel beside them. Should I spray immediately or wait until there is a warning, when the weather is damp? I keep the foliage as dry as possible but there is some humidity in the tunnel. No sign of blight on the tomatoes yet.
1 Answers
Gerry Daly Staff answered 6 years ago
In general you will not get blight on tomatoes in a greenhouse, if you keep the foliage dry. It can happen in a wet cool summer with condensation. Water only at ground level.
