
Flower profile
Blackbrush
Coleogyne ramosissima
Blackbrush is a flowering plant 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 March–May.
*iNaturalist research-grade observations, as of October 17, 2026.
Quick look
Coleogyne ramosissima or blackbrush, is a low lying, dark grayish-green, aromatic, spiny, perennial, soft wooded shrub, native to the deserts of the southwestern United States. It is called blackbrush because the gray branches darken when wet by rains. It is in the rose family (Rosaceae) and is monotypic.
- It belongs to the Rosaceae family. iNaturalist
- USDA PLANTS describes it as a shrub with a perennial life cycle. USDA PLANTS
- USDA PLANTS lists it as native in the lower 48 states and records it in 5 states. USDA PLANTS
- NatureServe lists it as native to Utah and Nevada. NatureServe
- In Utah, most iNaturalist sightings of it in flower come in April–May. iNaturalist
- In Nevada, most iNaturalist sightings of it in flower come in March–May. iNaturalist
- USDA PLANTS lists its flower color as yellow. USDA PLANTS
- USDA PLANTS gives its bloom period as mid spring. USDA PLANTS
- USDA PLANTS lists a mature height of about 6 ft. USDA PLANTS
- iNaturalist has 947 research-grade sightings of it in Utah, ranking #59 among the 109 flowers on our Utah list. iNaturalist
- iNaturalist has 563 research-grade sightings of it in Nevada, ranking #70 among the 110 flowers on our Nevada list. iNaturalist
Blackbrush gift ideas
Handmade blackbrush 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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Blackbrush art print
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Blackbrush greeting card
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Blackbrush mug
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Blackbrush earrings
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Blackbrush embroidery pattern
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Blackbrush 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
- 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.
- Nevada
- Not listed Not on Nevada fully protected plants, critically endangered (NAC 527.010). NatureServe: S4, apparently secure in Nevada. NAC 527.010
- Rare elsewhere
- Other states where NatureServe ranks it rare or missing: CO (S2). (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 blackbrush in 5 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Arizona, California, Colorado, Nevada, Utah.
Utah counties with USDA records: Emery, Garfield, Grand, Kane, San Juan, Washington, Wayne.
Nevada counties with USDA records: Clark, Lincoln, Nye.
More Utah flowers
Sources
- USDA, NRCS. PLANTS Database, profile CORA.
- iNaturalist, Coleogyne ramosissima: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Coleogyne (lead quoted under CC BY-SA 4.0).
- Utah: Utah noxious weed list (Utah Admin. Code R68-9-3).
- Nevada: Nevada fully protected plants, critically endangered (NAC 527.010).
- Nevada: Nevada noxious weeds (NAC 555.010).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Coleogyne ramosissima (global and state ranks).
- Edibility and toxicity: no source found (marked "not well documented").
- Photo: Anders Hastings via iNaturalist · CC BY 4.0 · resized.


