Pests On My Coreopsis - Knowledgebase Question

Waco, TX
Avatar for heatherh_797
Question by heatherh_797
May 1, 2002
I have a Coreopsis plant that I brought with me from another town. It was doing great until today I noticed that a section of it was turning yellow. As I got down to exam the plant I noticed that a web of some sort was all over one section and spreading to the rest of the plant. What kind of pest is this and how can I get rid of it?

Answer from NGA
May 1, 2002
Based on your description of the webbing and yellowing, the problem may be spider mites. These can be controlled by pruning out the most infected section of the plant (place this in the trash, not the compost pile)and spraying the remainder with insecticidal soap. Be sure to spray the bottoms of the leaves and along the stems. Read and follow the label instructions. (Coreopsis should regrow quickly, you could help it along with a little extra water.) Spider mites thrive in hot dry weather, so an occasional rain or strong spray of water from the garden hose can also help by knocking them down periodically.

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