The paniculata species of phlox are the most magnificent and there is a huge selection of perennials to choose from. Plant 'Pinky Hill' in full sun in fertile moist soil where it will grow to 30 inches and produce hot pink star-shaped flowers in July to August. It is also highly susceptible to powdery mildew. To reduce its occurrence, provide good air circulation and water the base of the plant, not the foliage. It is attractive to hummingbirds and butterflies.