Answer: You may deadhead butterfly bush if you like. In this heat, I'd suggest cutting each bloom off one by one, rather than shearing. Shearing in the summer is too stressful for the plant, removing too much foliage. If you look carefully at a bloom stem, you will see that there are smaller flower buds just below the large one to each side of it. If you cut at the base of the large bloom, directly above a set of leaves at the base, and avoid damaging the small side buds, they will also open and extend your bloom period. Water your plant deeply and thoroughly and as infrequently as possible (i.e., don't waterlog the soil). Spread a layer of organic mulch around the base to cool soil temperatures and maintain moisture. Then, enjoy your butterfly bush!
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