Q.wisteria
Our wisteria has a white powdery residue on the vine. I originally thought it to be a mildew but the leaves do not appear to be infected. Please advise. what is the diagnosis and what can I do to treat my white wisteria? Thank you.
Downtoearthdigs
Answered on June 25, 2015
t sounds like you may still have powdery mildew. Neem oil can help. Here is more informaiton:
https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm
https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
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