
Flower profile
Rose clover
Trifolium hirtum
Rose clover is a wildflower that USDA PLANTS lists as introduced in the lower 48 states. In California it's most often seen in bloom in March–May.
*iNaturalist research-grade observations, as of October 17, 2026.
On our lists for: California
Quick look
Trifolium hirtum, commonly known as rose clover, is a species of flowering plant in the legume family, Fabaceae. It is native to Eurasia and North Africa, and has been introduced and cultivated elsewhere.
- It belongs to the Fabaceae family. iNaturalist
- USDA PLANTS describes it as an herb (forb) with a annual life cycle. USDA PLANTS
- USDA PLANTS lists it as introduced in the lower 48 states and records it in 9 states. USDA PLANTS
- NatureServe lists it as not native to California. NatureServe
- In California, most iNaturalist sightings of it in flower come in March–May. iNaturalist
- USDA PLANTS lists its flower color as red. USDA PLANTS
- USDA PLANTS gives its bloom period as early spring. USDA PLANTS
- USDA PLANTS lists a mature height of about 0.8 ft. USDA PLANTS
- iNaturalist has 12,510 research-grade sightings of it in California, ranking #66 among the 110 flowers on our California list. iNaturalist
Rose clover gift ideas
Handmade rose clover 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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Rose clover art print
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Rose clover greeting card
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Rose clover mug
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Rose clover earrings
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Rose clover embroidery pattern
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Rose clover sticker
When does it bloom?
In California, most flowering sightings come in March–May.
Conservation status
- Federal (U.S. ESA)
- Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
- NatureServe global
- GNR Not yet ranked worldwide. NatureServe
- California
- Not listed Not on California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026). NatureServe: SNA, not applicable (usually because it isn't native there) in California. CNDDB listed plants (July 2026)
- Rare elsewhere
- No other U.S. state ranks it S1, S2, SH or SX.
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. For context only: ASPCA lists a related species, Trifolium hybridum (“Alsike Clover”), as non-toxic to dogs and cats. That doesn't tell us about this species, so keep pets away to be safe. ASPCA
🌿 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 rose clover in 9 states.
recorded by USDA PLANTS on our state lists not recorded
See the full list of states
Alabama, California, Florida, Kentucky, Louisiana, North Carolina, Oregon, Tennessee, Virginia.
California counties with USDA records: Alameda, Amador, Butte, Calaveras, Contra Costa, Fresno, Glenn, Kern, Los Angeles, Madera, Marin, Mariposa, Mendocino, Monterey, Napa, Nevada, Placer, Plumas, Riverside, Sacramento, San Diego, San Luis Obispo, Santa Barbara, Shasta, Solano, Sonoma, Stanislaus, Tehama, Tuolumne, Yolo, Yuba.
More California flowers
Sources
- USDA, NRCS. PLANTS Database, profile TRHI4.
- iNaturalist, Trifolium hirtum: taxonomy, research-grade observation counts and “Flowering” annotations, retrieved October 17, 2026.
- Wikipedia, Trifolium hirtum (lead quoted under CC BY-SA 4.0).
- California: California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026).
- California: California noxious weed species (3 CCR § 4500).
- USFWS, ECOS species database (ESA listing check), October 17, 2026.
- NatureServe Explorer, Trifolium hirtum (global and state ranks).
- Edibility and toxicity: ASPCA.
- Photo: Chuck Wilson via iNaturalist · CC0 · resized.


