Occurrence of root-feeding insects will manifest by the presence of dead patches. Pull dead vines and search through the root zone and soil for grubs and worms.
If your beds have damage caused by root-feeding insects, you should consider treatment with Imidacloprid (e.g. Admire Pro, Alias 4F, Alias 2F) immediately after bees are removed. Admire Pro (imidacloprid) is labeled for the control of cranberry rootworm, white grubs (Phyllophagaspp.), and other scarabs in cranberries.
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