15 Astragalus bisulcatus Seeds Twogroove Milkvetch Native Wildflower Hardy Perennial
Astragalus bisulcatus, commonly known as Twogroove Milkvetch, is a hardy herbaceous perennial native to the central and western regions of North America. It is a member of the legume family and forms a bushy, clump-forming plant with attractive compound foliage. In late spring to early summer, it produces spikes of small, pale purple to white pea-like flowers that add quiet charm to naturalistic plantings.
This species is well suited to meadow gardens, pollinator plantings, native plant landscapes, and xeriscapes, where its deep taproot helps it tolerate dry conditions once established. As a legume, it associates with nitrogen-fixing bacteria in the soil. Grow it in full sun and well-drained, sandy or gravelly soils for best results. It is a low-maintenance plant that pairs well with other drought-tolerant perennials and ornamental grasses.
Species: Astragalus bisulcatus
Type: Herbaceous perennial
Plant_Habit: Clump-forming, bushy
Sun: Full sun
Soil: Well-drained, sandy or gravelly, low fertility
Zones: 3-8
Germination: Scarify seed and cold stratify for 4-6 weeks before sowing
Sowing: Surface sow, lightly press into soil, keep moist until germination
Spacing: 12-18 inches
Notes: Native legume; attractive to bees and other pollinators