The Q&A Archives: columbine leaf miner

Question: What is the best way of controlling leaf miner on Columbines? Does anything work other than cutting off the infected leaves?

Answer: Cutting off the affected leaves early on, and thorough clean up off all plant debris each fall is usually sufficient. Many gardeners will cut the plant to the ground after it flowers (put cuttings in the trash, not the compost pile) hoping that the leaf miners will be gone by the time the plant regrows. Although the plant may not look perfect, the leaf minor won't kill it. For this reason, according to modern Integrated Pest Management guidelines, pesticides are not usually recommended. You may want to grow some different plants in front of your columbines so you don't notice the damage.

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