Care for Established Rose of Sharon Hibiscus
I live in Wisconsin and have a Rose of Sharon bush. I would like guidance with fertilizing this 8 ft. bush. Due to half of the multi-stemmed bush dying, I have trimmed it to half its width or about 4 ft.
Certified GKH Gardening Expert
Your Rose of Sharon only needs a dose of all purpose fertilizer once a year. These hardy shrubs can easily be revived with hard pruning - almost to the ground if necessary. With annual pruning, flower production will increase.