Shrubby perennial with striking bi coloured purple and white flowers. flowers may become all purple or white after extreme temperatures. Hardiness to -1 to -5 full sun or partial shade height 50cm to 45cm. flowers all summer. Cut back dead flowers spikes to encourage repeat flowering throughout summer and remove overwintered foliage in spring. Water plant through the first year of planting, when needed. Pot Size 2lt.