The large Hydrangea-like flower clusters of Summer Phlox create a spectacular show in the summer border. Sweetly fragrant as well, the flowers waft their scent over quite a distance. This selection has brilliant salmon-orange heads. All varieties of Summer Phlox are superb for cutting, and may even attract passing butterflies and hummingbirds. Remove faded flowers to encourage repeat blooming. Be on the lookout for powdery mildew, beginning in early summer. Regular deep waterings will do a lot to help prevent this disease problem.