Desert Marigold Baileya multiradiata
Desert Marigold is an annual wildflower native to the lower 48 states. It grows to 2.0 ft and blooms Jan – Oct. A host for pollen-specialist native bees.
More about this plant
Baileya multiradiata is a North American species of sun-loving wildflower in the family Asteraceae. It is native to the deserts of northern Mexico and the Southwestern United States. It has been found in the States of Sonora, Chihuahua, Coahuila, Durango, Aguascalientes, California, Arizona, Nevada, Utah, New Mexico, and Texas. Wikipedia →
Growing & care
USDA PLANTS · TRY- Hardiness
- ≥ zone 8 derived from its U.S. range
- Height
- 2.0 ft
- Lifespan
- Annual
- Foliage
- Broadleaf
- Flower colour
- Yellow AI AI image-analysis of community-science photos (~87% expert agreement) — not a botanical record
Wildlife & pollinators
How pollinator value is scored →❧ Caterpillar hosts Documented caterpillar host
Recorded feeding on Baileya in North America, including:
✦ Bees specialist-bee host · 76 bee visitors
Specialist native bees depend on it.
Some native bees are pollen specialists (oligolectic) — they raise young only on pollen from particular plant genera. Baileya is a recorded specialist-bee host, so losing it can mean losing the bee that relies on it.
76 native & managed bee species are documented visiting Desert Marigold — the 12 most-recorded:
Wildlife & visitors 7 nectaring
Open records of who else uses Desert Marigold — a generalist food-web signal, kept separate from the keystone Ecological Value.
7 adult butterfly & moth species are recorded nectaring at its flowers — the most-recorded:
Related plants
More Baileya →
How we know this (2) Methods & honest limits
We take the plant’s U.S. county range and look up each county’s long-term climate, then summarise: native rainfall = the median annual rainfall across its counties; heat tolerance = the warm end (90th percentile) of average temperature across its range (mirroring how our cold-hardiness floor uses an extreme). Counties + medians blunt the roadside/observer bias that makes point-level climate unreliable. Needs at least five placeable counties.
Honest limits: A realized, sampling-biased niche (where it has been recorded, not its physiological optimum), and county climate is coarse — large Western counties span deserts and mountains. Derived guide, never a measured fact.
McKenzie et al. assigned each species a flower colour with a GPT-4V vision model over iNaturalist photos. We use the confident tier plus a separately-labelled lower-confidence top-up (mostly inconspicuous green/brown flowers), and render it as a small tint — never as an asserted fact, and kept out of the written synopsis.
Honest limits: AI image inference (~87% expert agreement on the confident tier); a decorative, confidence-tiered indicator, not a measured trait.
Sources for this entry (23) Open & cited
Cite this page Open data, please attribute
PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).
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