Skeletonized Hollyhock Leaves - Knowledgebase Question

Center City, MN
Avatar for jkdelve
Question by jkdelve
August 20, 1998
What pest would skeletonize the leaves on a hollyhock. The plants are still blooming but all the leaves are almost gone. We've sprayed and then looked for dead ones but never find anything.

Answer from NGA
August 20, 1998
Skeletonized leaves are usually the work of young catapillars, before they grow large enough to eat the entire leaf.
Look under the leaves for them. You may see a flattened, slug-like creature feeding there. Some insects are most active at night, so if you can't find them in the daytime, do a Sherlock Holmes investigation with a flashlight at nite!

If you find catapillars, sprays with B.t. as the ingredient are a safe, organic control option. These are available in many brand names.

Good luck with the investigation!

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