Photo: Blackstem Plants
An upright, clump former with stiff lance-shaped grey leaves.
During the summer it produces slender, upright, racemes of saucer shaped, white flowers.
It's a quiet, elegant sort of plant that thrives in moist but well drained borders. Apply a generous 5-7cm mulch of well-rotted garden compost or manure around the base of the plants in spring to maintain the moisture. Don't let the soil dry up during the summer.
It may need protection in very severe winters. Should not be confused with the noxious weed Purple Loosestrife (Lythrum salicaria).
Moist but well-drained.
Full sun, partial shade