
Flower profile
Rhexia-leaved paintbrush
Castilleja rhexiifolia
Rhexia-leaved paintbrush is a wildflower that USDA PLANTS lists as native in the lower 48 states. It's on our flower lists for 2 states, and across the U.S. it's most often seen in bloom in June–August.
*iNaturalist research-grade observations, as of October 17, 2026.
Quick look
Castilleja rhexiifolia, commonly called rosy paintbrush, subalpine paintbrush, or rhexia-leaved paintbrush, is a species of plant in Orobanchaceae, commonly known as the broomrape family. They are a common flower found in moist habitats near or above timberline in the Rocky Mountains and the Pacific Northwest. Like most members of the Castilleja genus, they are partially parasitic plants.
- It belongs to the Orobanchaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) / a subshrub with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 9 states. USDA PLANTS
- NatureServe lists it as native to Colorado and Utah. NatureServe
- In Colorado, most iNaturalist sightings of it in flower come in June–September. iNaturalist
- In Utah, most iNaturalist sightings of it in flower come in July–August. iNaturalist
- iNaturalist has 1,985 research-grade sightings of it in Colorado, ranking #83 among the 110 flowers on our Colorado list. iNaturalist
- iNaturalist has 809 research-grade sightings of it in Utah, ranking #76 among the 109 flowers on our Utah list. iNaturalist
Rhexia-leaved paintbrush gift ideas
Handmade rhexia-leaved paintbrush gifts from independent makers.
🌱 Sample spot. Handmade gift picks from independent shops will appear here once our shop partnership is approved. These cards are placeholders, not real products.
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Rhexia-leaved paintbrush art print
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Rhexia-leaved paintbrush greeting card
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Rhexia-leaved paintbrush mug
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Rhexia-leaved paintbrush earrings
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Rhexia-leaved paintbrush embroidery pattern
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Rhexia-leaved paintbrush sticker
When does it bloom?
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- G5 Secure worldwide. NatureServe
- Colorado
- No list Colorado has no state law listing endangered or threatened plants, so we show NatureServe's Colorado ranks instead. NatureServe: S4, apparently secure in Colorado.
- Utah
- No list Utah has no state law listing endangered or threatened plants, so we show NatureServe's Utah ranks instead. NatureServe: SNR, not yet ranked in Utah.
- Rare elsewhere
- Other states where NatureServe ranks it rare or missing: NV (S1). (S1 critically imperiled, S2 imperiled, SH possibly extirpated, SX presumed extirpated.)
Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.
Can you eat it?
None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.
It isn't on the ASPCA plant list.
🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.
Where does it grow?
USDA PLANTS records rhexia-leaved paintbrush in 9 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming.
Colorado counties with USDA records: Boulder, Clear Creek, Conejos, Custer, Delta, Dolores, Eagle, Garfield, Gilpin, Grand, Gunnison, Hinsdale, La Plata, Lake, Larimer, Mesa, Mineral, Moffat, Montezuma, Ouray, Park, Pitkin, Routt, Saguache, San Juan, San Miguel, Summit.
Utah counties with USDA records: Box Elder, Cache, Carbon, Daggett, Davis, Duchesne, Emery, Grand, Juab, Morgan, Salt Lake, San Juan, Sanpete, Sevier, Summit, Tooele, Uintah, Utah, Wasatch, Weber.
More Colorado flowers
Sources
- USDA, NRCS. PLANTS Database, profile CARH4.
- iNaturalist, Castilleja rhexiifolia: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Castilleja rhexiifolia (lead quoted under CC BY-SA 4.0).
- Colorado: Colorado noxious weed lists A, B and C (8 CCR 1206-2, eff. May 15, 2025).
- Utah: Utah noxious weed list (Utah Admin. Code R68-9-3).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Castilleja rhexiifolia (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Dawn Nelson via iNaturalist · CC BY 4.0 · resized.


