Polygonaceae
Eriogonum umbellatum var. majus
Eriogonum umbellatum var. majus var. majus
Also known as Eriogonum subalpinum var. stenophyllum, Eriogonum umbellatum subsp. majus, Eriogonum subalpinum, Eriogonum subalpinum var. arachnoideum
Flowering Plants · Native Plants · Sulfur Buckwheat · Native · Rocky Mountains · Alpine · Perennial · Wildflower · Pollinator · Cold Hardy · Rock Garden · Buckwheat
This wide-ranging sulfur buckwheat variety is native to the northern Rockies and Canadian prairies, preferring rocky, well-drained soils in partial shade to full sun. It is extremely cold-hardy and well-suited to alpine and subalpine garden settings. Minimal care is needed once established; avoid overwatering or heavy clay soils.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water deeply but infrequently; allow soil to dry between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- rocky
- Soil pH
- 6.5–8
- Temperature
- -25°F to 100°F
- Cycle
- Perennial
Hardiness
USDA 4b-10b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 24 in apart
- Growth rate
- Slow
- Root depth
- Deep
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Alberta, British Columbia, Colorado, Idaho, Montana, Utah, Washington, Wyoming
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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