Q.Wisteria Disease
My wisteria has brown through to cream patches on its branches and has a lot of dead branches. Is this a virus? Or could it be dry and need watering?

Heather
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on April 27, 2011
The patches sound like lichen, which does not kill plants but often attaches to sick plants. I would suspect that a fungus is attacking the plant. Treat the wisteria with a fungicide. I like neem oil myself as it will also kill any pests on the plant. Here is more information on it:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
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