
Cheesebush (Ambrosia salsola) is in the Sunflowers, Daisies, Asters, and Allies family (Asteraceae). Across the U.S., iNaturalist users have logged 955 research-grade flowering observations of it in our sample, peaking in March.
Nationally it blooms mainly from February to April, but timing varies a lot by state and elevation — see the table below.
When to photograph Cheesebush: observations by month (U.S.)
About Cheesebush
Ambrosia salsola, commonly called cheesebush, winged ragweed, burrobush, white burrobrush, and desert pearl, is a foul-smelling, scraggly perennial shrub in the (sunflower family) common in deserts of the southwestern United States and northwestern Mexico.From Wikipedia via iNaturalist — article, CC BY-SA.
Cheesebush by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 836 | March | Feb–Mar |
| Nevada | 67 | April | Mar–May |
| Arizona | 48 | March | Feb–Apr |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (Sunflowers, Daisies, Asters, and Allies)

black-eyed Susan

Common Yarrow

White Snakeroot
Chicory

Lawn daisy

Philadelphia fleabane

Pearly Everlasting

Blue Mistflower
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 Cheesebush?
Nationally, March has the most observations, with the main season from February to April.
Where is Cheesebush most often seen?
The most observations come from California, Nevada, Arizona.