Bloomipedia
Alsike clover (Trifolium hybridum)
Photo: stephen via iNaturalist · CC BY 4.0 · resized

Flower profile

Alsike clover

Trifolium hybridum

Introduced in the lower 48

Alsike clover is a wildflower that USDA PLANTS lists as introduced 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 May–September.

49states
2of our state lists
8,287U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: Alaska, Wyoming

Quick look

Trifolium hybridum, the alsike clover, is a species of flowering plant in the pea family, Fabaceae. The trifoliate leaves are unmarked and the stalked, pale pink or whitish flower head grows from the leaf axils.

  • It belongs to the Fabaceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a annual, perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as introduced in the lower 48 states and records it in 49 states. USDA PLANTS
  • NatureServe lists it as not native to Alaska and Wyoming. NatureServe
  • In Alaska, most iNaturalist sightings of it in flower come in June–September. iNaturalist
  • In Wyoming, most iNaturalist sightings of it in flower come in June–September. iNaturalist
  • USDA PLANTS lists its flower color as white. USDA PLANTS
  • USDA PLANTS gives its bloom period as late spring. USDA PLANTS
  • USDA PLANTS lists a mature height of about 2 ft. USDA PLANTS
  • iNaturalist has 458 research-grade sightings of it in Alaska, ranking #92 among the 108 flowers on our Alaska list. iNaturalist
  • iNaturalist has 376 research-grade sightings of it in Wyoming, ranking #75 among the 107 flowers on our Wyoming list. iNaturalist

Alsike clover gift ideas

Handmade alsike clover gifts from independent makers.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (1,134 records)
Bloom time in each of our 2 states
StateTypePeak bloomSightings*
AlaskaIntroducedJune–September458
WyomingIntroducedJune–September376

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
Alaska
No list Alaska has no state law listing endangered or threatened plants, so we show NatureServe's Alaska ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Alaska.
Wyoming
No list Wyoming has no state law listing endangered or threatened plants, so we show NatureServe's Wyoming ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Wyoming.
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?

For peopleToxic (slight, per USDA)

USDA PLANTS rates its toxicity as “slight.” (USDA's rating covers people and livestock and doesn't say which parts.) USDA PLANTS

For petsToxic to horses

ASPCA's entry “Alsike Clover” (Trifolium hybridum) lists it as toxic to horses. Signs include: "Dew poisoning" - sunburn, skin ulcers; "Big liver disease" - liver failure Credit: Margaret Williams @ USDA-NRCS PLANTS… 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 alsike clover in 49 states plus Washington, D.C.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming; District of Columbia.

Alaska counties with USDA records: Anchorage, Chugach, Copper River, Denali, Dillingham, Fairbanks North Star, Haines, Kenai Peninsula, Kodiak Island, Nome, Southeast Fairbanks, Yukon-Koyukuk.

Wyoming counties with USDA records: Albany, Big Horn, Carbon, Crook, Fremont, Johnson, Lincoln, Natrona, Park, Sheridan, Sublette, Teton, Weston.

More Alaska flowers

Sources