How do I treat leaf miner on hollyhocks?

Question

Most leaves of the hollyhocks have leaf miners, but have not affected the flowers. Flowers are fading quickly now, and wondering when I need to cut the plant back and mulch. When do I cut the hollyhocks back? I think I want to grow a million of these!!

Answer 1

Neem oil, which is both an organic insecticide and fungicide, sprayed on the plants is also recommended for most problems. Here is more information:
https://www.gardeningknowhow.com/plant-problems/pests/insects/leaf-miner-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

You can cut them back during your fall cleanup, or now, if the flowers have finished for the season.