They get tiny little worms that you can’t hardly see and they eat all the leaves off and it will start growing and they they are again
Loriann added on May 16, 2018 | Answered
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Answered on May 17, 2018
It might be sawfly larvae causing damage to your columbine. Here is an article that gives a picture and goes into remedies. https://www.extension.umn.edu/garden/insects/find/be-on-the-watch-for-columbine-sawfly/
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