Western Sweetvetch

Hedysarum occidentale

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Hedysarum
Species:
Hedysarum occidentale
USDA Symbol:
HEOC

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
60 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug
Bloom Colors:
pink, purple, magenta

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies, small mammals
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts from deep taproot following fire; typical of montane meadow and sagebrush steppe communities with periodic fire.

Soil Requirements

Soil Type:
well-drained, sandy or rocky soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to arid and semi-arid regions

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–90 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–42 days
Notes:
Scarification of hard seed coat improves germination. Cold stratification recommended for best results.

The above propagation data sourced from Claude AI

Pre-treatment: None required

Establishment: B. sitchensis is found from coastal Alaska to northwest Oregon; in montane and subalpine zones.

Source: npn.rngr.net