Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Fabaceae

Genus:

Astragalus

Species:

Astragalus subumbellatus

USDA Symbol:

ASSU28

Growth Characteristics

Height:

40 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

may,jun,jul

Bloom Colors:

pink, purple

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

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

6.0 - 7.5 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to rocky, open slopes and ridges

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Scarification:

Seed coat scarification required before sowing

Germination Time:

14–30 days

Notes:

Scarification improves germination rates. Astragalus seeds have hard seed coats that benefit from mechanical or chemical scarification before cold stratification.

The above propagation data sourced from Claude AI