Polygonaceae
Eriogonum umbellatum var. speciosum
Eriogonum umbellatum var. speciosum var. speciosum
Also known as Eriogonum speciosum
Flowering Plants · Native Plants · Buckwheat · California Native · Yellow Flowers · Pollinator Plant · Drought Tolerant · Perennial · Xeriscape · Wildflower · Native Garden · Rocky Soil
The showy sulfur buckwheat is a striking California native perennial valued for its clusters of bright yellow flowers and adaptability to poor, well-drained soils. It grows slowly but rewards patience with a long bloom season that is highly attractive to native bees and butterflies. Minimal pruning and very little supplemental water are needed once the plant is established.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately; allow soil to dry nearly completely between waterings · Every 10-14 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6.5–8
- Temperature
- -20°F to 90°F
- Cycle
- Perennial
Hardiness
USDA 5a-9b
Form & growth
Mature size and habit
- Mature height
- 18 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Slow
- Root depth
- Medium
- Flowers
- Yellow
- Foliage
- Green · Coarse
Ecology & origin
Where it belongs and what it brings
- Native to
- California
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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