Vigorous clumps of bushy leaves and tall stems of dark purple flowers with attractive veining from June to July.  More vigorous than many and best at the water's edge or in moist, sunny borders. Average height 3ft. Full sun.  Hardy.

The prettily ruffled, silver-edged petals combine with slightly blue-tinted foliage in a delightful vertical accent. More vigorous than many and best at the water's edge or in moist, sunny borders. Average height 2.5ft.  Hardy.

Vigorous clumps of bushy leaves and tall stems of sky blue flowers from early to mid-summer. Average height 2-3ft.  Full sun. Hardy.   "Good for planting around edge of pond"