
Creamcups (Platystemon californicus) is in the Poppy Family family (Papaveraceae). Across the U.S., iNaturalist users have logged 2,039 research-grade flowering observations of it in our sample, peaking in April.
Nationally it blooms mainly from March to May, but timing varies a lot by state and elevation — see the table below.
When to photograph Creamcups: observations by month (U.S.)
About Creamcups
Platystemon is a monotypic genus of flowering plants in the poppy family containing the single species Platystemon californicus, which is known by the common name creamcups. It is native to Oregon, California, Arizona, Utah and Baja California, and is found in open grasslands and sandy soils.From Wikipedia via iNaturalist — article, CC BY-SA.
Creamcups by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 1,992 | April | Mar–May |
| Arizona | 42 | March | Feb–May |
| Oregon | 5 | April | Apr–Apr |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (Poppy Family)

Bloodroot

Dutchman's breeches

California poppy

Squirrel Corn

Pacific Bleeding Heart

Greater celandine

Celandine Poppy

Little Gold Poppy
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 Creamcups?
Nationally, April has the most observations, with the main season from March to May.
Where is Creamcups most often seen?
The most observations come from California, Arizona, Oregon.