Purple owl’s clover (Castilleja exserta) blooming in the Sonoran Desert

By Southwest Biological Science Center March 2026 (approx.)

A close up photo of purple owl’s clover (Castilleja exserta) flowers blooming, there are multiple flowers with many bright purple petals blooming, with some in focus in the foreground and others in soft focus in the background

Detailed Description

Purple owl’s clover (Castilleja exserta) blooming in the Sonoran Desert near Roosevelt Lake in the Tonto National Forest in March 2026. Photo by Sarah Birchard (USGS).

Sources/Usage

Public Domain.

Photo by Sarah Birchard (USGS)