trefle.io · Taken Jun 20, 2020 by Lennaert Steen (cc-by-sa)
Fabaceae
Alpine milk-vetch
Astragalus alpinus
Also known as Phaca minima, Alpine astragalus, Astragalus alpinus, Phaca astragalina
Native Plants · Alpine · Legume · Nitrogen Fixing · Rock Garden · Astragalus · Wildflower · Subarctic · Pollinator · Perennial · Cool Climate
Alpine milk-vetch is a low-growing perennial legume native to alpine and subarctic regions, best suited to rock gardens and naturalized wildflower areas with cool climates. It fixes nitrogen in the soil, making it a beneficial companion plant, and produces delicate violet-blue pea-like flowers in summer. Plant in well-drained, lean soil in partial shade to full sun and water regularly but avoid waterlogging.
Growing conditions
The details behind the basics
- Daily light
- 5 hours
- Watering
- Water moderately; soil should be moist but well-drained · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7.5
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed, Division
Hardiness
USDA 4a-9b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Alberta, Aleutian Is., Austria, British Columbia, Buryatiya, Chita, Colorado, Czechoslovakia, Finland, France, Germany, Great Britain, Greenland, Idaho, Irkutsk, Italy, Kamchatka, Kazakhstan, Kirgizstan, Krasnoyarsk
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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