Columbia Milkvetch
Astragalus succumbens
- Native to:
- United States
Jhorthos
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Astragalus
- Species:
- Astragalus succumbens
- USDA Symbol:
- ASSU7
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 30 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Medium
- Bloom Months:
- may,jun,jul
- Bloom Colors:
- purple, lavender
- Ground Cover:
- Yes
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
Keystone Species Ranking
- Pollen Specialist Bee Keystone:
- ★★★☆☆ Native pollen specialist bee species supported by this genus (NWF)
Reported Fauna Sightings
Bees: Nevada bumble (Bombus nevadensis)
Garden & Ecology Notes
- Wildlife Value:
- bees, native pollinators
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to arid regions, prefers open areas
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. Seeds may benefit from brief hot water treatment before cold stratification.
The above propagation data sourced from Claude AI
Pre-treatment: None required
Establishment: The Allium geyeri can be found throughout North America; from prairies to mid elevations in the mountains. The propagation protocol does not provide specific details on germination rate, temperature, or time range.
Source: npn.rngr.net
ORGHPS Germination Guide: Put in deep pot; protect from damping off