Bourgov's Milkvetch
Astragalus bourgovii
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Fabaceae
- Genus:
- Astragalus
- Species:
- Astragalus bourgovii
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- Less than 6 in
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
- Bloom Months:
- jun, jul, aug, sep
- Bloom Colors:
- Pink, Yellow, Purple
Native Range
United States: Idaho, Montana, Canada: Alberta, British Columbia
Keystone Species Ranking
- Bee Keystone:
- ★★★☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)
Soil Requirements
- Soil Type:
- well-drained, sandy or rocky soil
- pH:
- 6.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- native to arid and semi-arid regions
Germination Information
Pre-treatment: Fresh seeds are scarified with sandpaper and placed in a 5 month outdoor cold, moist stratification. A hot water treatment for 5 to 20 seconds is recommended, immediately transferred to cool water, and soaked in cool water for 24 to 48 hours.
Establishment: Collect mature legumes when they begin to split and turn tan in color. Seeds are brown at maturity. Pods are collected in paper bags and kept in a well ventilated drying shed prior to cleaning. A. bourgouvii occurs in the northern Rocky Mountains, from B.C. and Alberta, south to Montana and west to Shoshone Co., Idaho, on talus and scree slopes in the subalpine to alpine.
Source: npn.rngr.net