Prairie, Purple Prairie Clover
- Perennial and hardy to zone 4
- Plants grow to 1-3 feet tall
- Bright purple blossoms mid-summer through fall
- Grows well on most soils
- Fixes nitrogen in the soil for increased fertility
(Dalea purpurea) Bright purple blossoms mid-summer through fall. Stunning when planted with Butterflyweed, Black-Eyed Susan, and any of the shorter prairie grasses. An important prairie legume that fixes nitrogen in the soil. Grows 1-3' tall on most well-drained soils ranging from dry sand to clay. Perennial. Hardy to zone 4.