What is causing the bumps on the leaves of my grape vine?
Our Advice
The bumps are caused by the Erinose mite which is feeding on the undersides of the leaves. If only a few leaves are affected you can remove them. If the damage is more widespread apply sprays of SB Plant Invigourator or Organic 2 in 1 from Vitax in the Spring and again in late-summer when the mites are migrating and easier to control.
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