Astragalus calycosus var. scaposus

Astragalus calycosus var. scaposus

Native to:
United States | AZ, CO, NM, NV, UT

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Astragalus
Species:
Astragalus calycosus var. scaposus

Growth Characteristics

Growth Habit:
Forb/herb
Height:
30 cm
Drought Tolerance:
High
Bloom Months:
may,jun,jul
Bloom Colors:
purple, pink

Keystone Species Ranking

Pollen Specialist Bee Keystone:
★★★☆☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:
bees, native pollinators
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Prairie-adapted legume that benefits from periodic fire which reduces woody competition and stimulates flowering. Resprouts from deep taproot.

Source: Claude claude-sonnet-4-5-20250929 Batch

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–30 days
Notes:
Astragalus seeds have hard seed coats requiring scarification followed by cold stratification. Germination can be erratic.

Source: Claude claude-sonnet-4-5-20250929 Batch

ORGHPS Germination Guide: Put in deep pot; protect from damping off

Source: Ontario Rock Garden & Hardy Plant Society