Hello! I have a question regarding my Rose of Sharon Hibiscus syriacus 'Minerva' (Family: Malvaceae Genus: Hibiscus Species: syriacus Cultivar: Minerva.) I am in zone 5 (Chicago). We planted 2 of them last summer, they are about 3 feet tall, and they did bloom. We are wondering is it time to prune and how much to prune. We have no buds yet. Thanks for any help.
We have 3 healthy Rose of Sharons about 12 yrs old. We have found that pruning them at the beginning of fall helps keep them at a reasonable and attractive height and size.. After they are well established, you should probably take off about half of their height each fall., otherwise, they can get very lanky.