If you pick a spot where your Tahiti Hibiscus has room to grow to 5-8’ tall x 4-7’ wide, you shouldn’t have to worry very much about pruning. It’s common for shrubs to have some branches that die back over the winter. Those can be pruned in the spring. After a number of years, some shrubs need rejuvenating. If that happens with the hibiscus, you can cut back the entire plant to 2-3’ tall in the spring and let all the branches grow back. Or, over a series of years, you can trim back 1/3 of the branches.
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