Hi, I live in Toronto and want/need to prune my Rose of Sharon plants. They’re growing wild. It is now October (though hot this week). Am I better off to dead head and drastically prune in the coming weeks or should I wait for spring?
Pruning a Rose of Sharon can be done either in early spring or late fall, so it is really up to you when it is most convenient. As a gardener by profession, I usually prune Rose of Sharon in late fall as I know come the spring my “to-do” list gets pretty long. I also like to prevent the seed heads from opening as I find they easily sprout and can become more work it you have to weed them out of your garden beds.
You mentioned a drastic hair cut. Like all shrubs, it is recommended to prune back by about a third. If you are feeling up for it, adding some compost around the base and continuing to watering until first frost will benefit your shrub and gardens as well.
October 4, 2023