Polygonaceae
Prostrate Sulphur Flower
Eriogonum umbellatum var. humistratum var. humistratum
Also known as Eriogonum umbellatum var. prostratum, Spreading Sulphur Flower, Prostrate Wild Buckwheat
Flowering Plants · Native Plants · Buckwheat · California-Native · Wildflower · Groundcover · Drought-Adapted · Rocky-Soil · Pollinator · Perennial · Low-Growing
This low-growing California-endemic buckwheat variety prefers partially shaded exposures with excellent drainage and minimal irrigation after establishment. It is ideal for California native gardens, dry slopes, or rock gardens where it can spread slowly without competition. Avoid summer overwatering, which is the most common cause of failure.
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
- 18 in apart
- Growth rate
- Slow
- Root depth
- Deep
- Flowers
- Yellow
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- California
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
More Eriogonum
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