Polygonaceae
Eriogonum umbellatum var. subaridum
Eriogonum umbellatum var. subaridum var. subaridum
Also known as Eriogonum umbellatum subsp. ferrissii, Eriogonum umbellatum subsp. subaridum, Eriogonum biumbellatum, Eriogonum ferrissii
Flowering Plants · Native Plants · Eriogonum · Sulphur Flower · Buckwheat · Native Perennial · Xeriscape · Rock Garden · Southwestern Native · Drought Tolerant · Pollinator · Mat Forming
Subaridum Sulphur Flower is a compact, mat-forming perennial native to the arid slopes of the southwestern United States, ideal for rock gardens, dry borders, and native plant landscapes. It thrives in lean, sharply drained soils and full sun; avoid rich or consistently moist soil, which can cause root rot. Once established, this resilient wildflower needs virtually no supplemental water and produces clusters of bright yellow blooms beloved by native bees and butterflies.
Growing conditions
The details behind the basics
- Daily light
- 6 hours
- Watering
- Water lightly until soil is barely moist; allow soil to dry completely 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
- 18 in apart
- Growth rate
- Slow
- Root depth
- Deep
- Flowers
- Yes
- Foliage
- Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- Arizona, California, Colorado, Nevada, Utah
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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