California Buckwheat (Eriogonum fasciculatum) is in the knotweed family family (Polygonaceae). Across the U.S., iNaturalist users have logged 4,593 research-grade flowering observations of it in our sample, peaking in May.
Nationally it blooms mainly from December to September, but timing varies a lot by state and elevation — see the table below.
When to photograph California Buckwheat: observations by month (U.S.)
About California Buckwheat
Eriogonum fasciculatum is a species of wild buckwheat known by the common names California buckwheat and eastern Mojave buckwheat.From Wikipedia via iNaturalist — article, CC BY-SA.
California Buckwheat by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 4,332 | June | Dec–Sep |
| Nevada | 136 | April | Apr–May |
| Arizona | 112 | April | Mar–May |
| Utah | 13 | May | May–Jun |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (knotweed family)
Low Smartweed
Desert Trumpet
Sulfur Buckwheat
American jumpseed
Naked Buckwheat
Japanese knotweed
American bistort
Arrow-Leaved Tearthumb
Photography tips
- Photograph flowers on calm, overcast mornings to avoid wind blur and harsh shadows.
- Get low: a shallow depth of field (f/2.8–f/5.6) isolates a bloom against soft color.
- Stay on trails — trampling meadows kills plants and ruins next year's display.
- Try a kaleidoscope abstract of a single bloom with our online kaleidoscope tool.
FAQ
When is the best time to photograph California Buckwheat?
Nationally, May has the most observations, with the main season from December to September.
Where is California Buckwheat most often seen?
The most observations come from California, Nevada, Arizona.