Western Sweetvetch

Hedysarum occidentale

Native to:
Canada, United States

📍 View on iNaturalist →

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:
80 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jun,jul,aug
Bloom Colors:
pink, purple

Wildlife Benefits

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

Garden & Ecology Notes

Wildlife Value:
bees, butterflies

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 — 30–60 days
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–30 days
Notes:
Seeds benefit from scarification (nicking or hot water treatment) followed by cold stratification.

Pre-treatment: None required

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

Source: npn.rngr.net