Butterfly bush (Buddleia) blooms spring through fall. They are open branched and lovely in bloom. It's recommended here in Florida to cut them back about 1/3 in early spring, before new growth.
I have not used it here, but we had many scattered throughout the townhouse complex we lived in up North. Sadly, they had to remove all of them within two years. The bushes we had were very susceptible to powdery mildew and spider mites, even with regular treatment.
Butterflies LOVE them, but only if the plants are healthy.
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