Purple Owl's-Clover (Castilleja exserta) is in the broomrape family family (Orobanchaceae). Across the U.S., iNaturalist users have logged 1,970 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 Purple Owl's-Clover: observations by month (U.S.)
About Purple Owl's-Clover
Castilleja exserta (formerly Orthocarpus purpurascens) is a species of plant in the genus which includes the Indian paintbrushes. Its common names include purple owl's clover, escobita, and exserted Indian paintbrush....From Wikipedia via iNaturalist — article, CC BY-SA.
Purple Owl's-Clover by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 1,876 | April | Mar–May |
| Arizona | 94 | March | Mar–Apr |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (broomrape family)
Warrior's Plume
Canadian lousewort
Mediterranean lineseed
American cancer-root
Felt Paintbrush
Texas Paintbrush
One-Flowered Cancer-Root
Narrowleaf Cow Wheat
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 Purple Owl's-Clover?
Nationally, April has the most observations, with the main season from March to May.
Where is Purple Owl's-Clover most often seen?
The most observations come from California, Arizona.