STOKESIA laevis Purple Parasols - Medium 12-18" - Plant 14" apart zone 5-9 PP#10660 Highly acclaimed variety. As the flowers mature, their color changes. At any one time there will be up to seven complementary colors on one plant - from powder blue through magenta, summer to fall. Immense disk-like flowers on 12" -18" stems. Needs some winter protection for northern gardens. Will bloom from summer until first frost, and is evergreen in the south. No garden is complete without this choice subject.