Answer: Hibiscus should be pruned once or twice a year to keep it thick and bushy and full of blooms. Prune in the spring when new growth begins and then again in mid-summer. You can remove as much as one third of the plant without harm. Cut it back all over to force new growth in the center of the plant. In your case you can easily prune it back by 10-12 inches without harm, or less if you want to keep it larger. Best wishes with your hibiscus.
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