Answer: This plant tends to be floppy,, especially when it is in full bloom and if there has been rain to make it wet and even heavier. It will be sturdier in full sun than it would in shade, and it will be less floppy if it is not oversupplied with nitrogen, so make sure not to overfertilize. In some cases the older dead stems may help support the plant, but it is always a good idea to remove dead wood from the interior of a shrub. Pruning would typically be limited to removing dead wood and possibly thinning out some (maybe a fifth of them) of the oldest stems at the base of the shrub each year. An overall trim however could encourage weaker tip growth.
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