Something is eating my hollyhock - Ask Extension
Can you help me to determine what is killing my hollyhock and how I can help it? Should I cut back the leaves? Is it rust?
Thank you for your help...
Knowledgebase
Something is eating my hollyhock #784565
Asked March 20, 2022, 2:12 PM EDT
Can you help me to determine what is killing my hollyhock and how I can help it? Should I cut back the leaves? Is it rust?
Thank you for your help,
Amanda
Multnomah County Oregon
Expert Response
Thank you for your question, Amanda. The only disease identified in hollyhock in the Pacific Northwest is, in fact, rust and it does appear to be that described here: https://pnwhandbooks.org/plantdisease/host-disease/hollyhock-alcea-rosea-rust
1. Now is a good time to pick up and burn all infected plant parts at the end of the growing season and again in early spring.
2. And, during the growing season, keep infected parts picked off.
3. Remove other hosts like cheeseweed (Malva parviflora), Lavatera, Hibiscus, and other Malvaceae plants asap.
Good luck!
1. Now is a good time to pick up and burn all infected plant parts at the end of the growing season and again in early spring.
2. And, during the growing season, keep infected parts picked off.
3. Remove other hosts like cheeseweed (Malva parviflora), Lavatera, Hibiscus, and other Malvaceae plants asap.
Good luck!
