Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Fabaceae

Genus:

Astragalus

Species:

Astragalus sulcatus

USDA Symbol:

ASSU29

Growth Characteristics

Height:

50 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

may,jun,jul

Bloom Colors:

white, cream

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:

Tolerates periodic fire and may increase after disturbance. Resprouts from root crown following top removal by fire or grazing.

Soil Requirements

Soil Type:

well-drained, calcareous, rocky soil

pH:

6.5 - 8.0 (neutral to slightly alkaline)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to limestone-rich areas

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Scarification:

Seed coat scarification required before sowing

Germination Time:

14–30 days

Notes:

Hard seed coat requires scarification before cold stratification. Germination improved with inoculation of appropriate Rhizobium bacteria.

The above propagation data sourced from Claude AI