USDA Hardiness Zones
5 - 8
May - October
A very diverse group of plants consisting of numerous species and offering a dependable plant in the border or as a groundcover in the rock garden.
Full to partial shade in a moist well-drained soil.
Numerous cultivars available. Some include:
'Brookside' 18-24 inches tall, blue flowers, excellent fall foliage color
'Johnsons Blue' 18-24 inches tall, blue flowers
'Rozanne' 18-24 inches tall, large suacer shaped violet flowers
'Springtime' 18-24 inches tall, clump forming, purple flowers
'Wargrave Pink' 15-18 inches tall, salmon pink flowers
Large group of plants offering many cultivars useful for groundcovers and border plants. Good drainage is important for long term survivability. Deadhead for some repeat bloom. Don't plant too deep to avoid crown rot problems.