With an ever-changing blend of red, magenta, and burgundy, Miss Molly butterfly bush (Buddleia 'Miss Molly') blooms in midsummer and continues until frost arrives. "Miss Molly grows quickly and needs very little care to continue flowering year after year," says Kelly Funk, president Jackson & Perkins. "Cut it down to about one-third of its original height in late winter and early spring to improve branching and flower production and let it go."