Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Fabaceae

Genus:

Astragalus

Species:

Astragalus tweedyi

USDA Symbol:

ASTW

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb

Height:

30 cm

Light Requirements:

Full Sun

Drought Tolerance:

High

Bloom Months:

apr,may,jun

Bloom Colors:

purple, lavender, pink

Wildlife Benefits

Bees:

★☆☆☆☆ Documented bee visitation (GBIF)

Keystone Species Ranking

Pollen Specialist Bee Keystone:

★★★☆☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Wildlife Value:

bees, small mammals

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts from root crown following fire, adapted to periodic fire regimes of sagebrush steppe ecosystems.

Soil Requirements

Soil Type:

gravelly, 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 slopes and open areas

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Scarification:

Seed coat scarification required before sowing

Germination Time:

14–42 days

Notes:

Seed coat scarification recommended for best germination rates, typical of Astragalus species.

The above propagation data sourced from Claude AI