1 named cultivar
The Story
Plant Bio
Eriogonum umbellatum, sulphur buckwheat, is a low semi-evergreen perennial native to western North America, forming a mat six to twelve inches high and one to three feet across. Small spoon-shaped leaves are green above and white-felted beneath, and leafless stems carry umbels of tiny sulphur-yellow flowers that age to rust and orange.
The flowers change colour rather than simply fading — opening bright yellow and ageing through cream to a deep rust that holds on the plant for months, so it earns its place long after the bloom. It is a keystone western native, supporting a remarkable number of butterflies, and it demands sharp drainage: it dies faster from summer water than from any winter.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
12 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Low
Humidity
Low
Lifespan
Perennial
Native To
Western North America
Toxicity
Non-toxic
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Plant in full sun in gritty, sharply drained soil.
- Avoid clay and anything that holds summer moisture.
- Water sparingly while establishing, then not at all.
- Do not feed or mulch over the crown.
- Leave the aged rust-coloured heads standing.
- Cut back only lightly, in early spring.
Pro Tip
Summer irrigation kills it faster than any winter cold — site it away from anything on a watering schedule.
Keep It Thriving
Care Guide
Do
- Give it full sun and gritty drainage ☀️
- Leave it dry through summer 🌵
- Let the rust-coloured heads stand 🍂
- Plant it for western butterflies 🦋
Don't
- Water it once established ❌
- Plant it in clay or rich soil ❌
- Mulch over the crown ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sow | ||||||||||||
| Tidy |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Golden Buckwheat questions
What zones can Golden Buckwheat grow in?
Golden Buckwheat is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Golden Buckwheat deer resistant?
Yes — Golden Buckwheat is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Golden Buckwheat bloom?
Golden Buckwheat typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Golden Buckwheat need full sun?
Golden Buckwheat does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Golden Buckwheat drought tolerant?
Yes — once established (usually after the first full season), Golden Buckwheat handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Grow Golden Buckwheat with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.