Amethyst Tall Phlox will sure to make a statement in your perennial garden! This variety is a vibrant purple and will bloom late Summer into early Fall! Amethyst Tall Phlox can reach 3' tall and up to 3' so make sure to allow enough room in your planting bed. Allow enough space between plantings to help prevent powdery mildew during the humid Summer months. Phlox prefer full sun but do like their roots to remain cool so adding mulch around the base of the plant is recommended.