Answer: Pinching back will probably stop flowering altogether so I don't think that is a solution. The stems on these plants are naturally tall. Pinching them back will only result in short, bare stems. There are some nearly invisible stakes available. They are green and most will be hidden by the foliage as the plants grow. I use the cages developed for dahlias in my garden. They consist of two green stakes and a circle on top where you poke the flower stems. The plants remain upright and the leaves disguise the entire thing. You might want to try these - or plant lower growing flowering plants. Best wishes with your garden!
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