Evergreen, clump forming herbaceous perennial. Foliage edged with golden stripes. Light blue flowers are produced on upright strems. Good patio plant. Flowers in summer, plant in full sun and free drain soil hardiness to -1c to -7c. Feed with (High potash) or Tomato feed June and July to set flowers for next years flowers. If severe frost cover with fleece. Pot Size 2lt.