Astragalus calycosus var. calycosus

Astragalus calycosus var. calycosus

Native to:
United States | AZ, CA, ID, NM, NV, OR, UT, WY

Taxonomy

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

Growth Characteristics

Growth Habit:
Subshrub
Height:
60 cm
Drought Tolerance:
Medium
Bloom Months:
may,jun,jul
Bloom Colors:
yellow

Keystone Species Ranking

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

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Adapted to fire-maintained cedar glades and barrens; resprouts from rootstock after fire and benefits from reduced woody competition.

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:
Legume seeds often benefit from scarification or hot water treatment before cold stratification to break physical dormancy.

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