Plant out in the autumn to establish a new plant clump, in a sunny well drained position
After flowering cut down the stems to keep the plant tidy and encourage further flower stalks
Flowers all summer until the frost
Can be grown from seed, but it is easier to split an established clump in the autumn after flowering
Use well drained compost with added grit or vermiculite, cover seeds only lightly
When the seedlings have germinated, transplant five seedlings into a 7 cm pot to establish a small clump, potting on as the plants grow
Well drained compost with added grit or vermiculite. Dappled sun whilst plants are still small