Cobwebs on Blueberry Bushes - Knowledgebase Question

Cashiers, NC
Question by bmerrell
June 30, 1999
We have 6 blueberry bushes that have produced beautiful blueberries for 3-4 years. Last summer at the end of the season, the last crop of berries went bad, the leaves turned red, and the bushes had cobwebs all over them. I hoped whatever got them last summer would not come back, but it appears it is starting again. There are healthy green blueberries (a few blue) on all bushes but one. They are starting to get the cobwebs and the one bush has red leaves and no fruit. What is it and what can I do to save my summer crop?

Answer from NGA
June 30, 1999


Webbing on the leaves and stems of plants is usually associated with Spider Mites and these insects prefer hot, dusty situations so they generally appear in late summer. Examine the undersides of the leaves to see if you can spot the tiny insects. Use a magnifying glass to help you get up close and personal with the pests. If you do find Spider Mites, you can wash them off with a strong stream of water from the hose. Repeat every morning for three days, making sure you direct the stream at all leaf surfaces. Insecticidal soaps work well against Spider Mites, too. Once you eliminate the pests, the plants should recover.

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