Bloomipedia
Fourpoint evening primrose (Oenothera rhombipetala)
Photo: Darius Regnier via iNaturalist · CC0 · resized

Flower profile

Fourpoint evening primrose

Oenothera rhombipetala

Native to Nebraska

Fourpoint evening primrose is a wildflower that USDA PLANTS lists as native in the lower 48 states.

15states
179NE sightings*
937U.S. sightings*

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

On our lists for: Nebraska

Quick look

Oenothera rhombipetala, the four-point evening-primrose, greater four-point evening-primrose, or diamond petal primrose, is a species of flowering plant in the family Onagraceae. It is native to the central United States. A biennial, it is often found alongside roads. It can grow up to 5 feet tall.

  • It belongs to the Onagraceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a annual, biennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 15 states. USDA PLANTS
  • NatureServe lists it as native to Nebraska. NatureServe
  • iNaturalist has 179 research-grade sightings of it in Nebraska, ranking #91 among the 108 flowers on our Nebraska list. iNaturalist

Fourpoint evening primrose gift ideas

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When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (46 records)

There are only a handful of Nebraska flowering records, so this chart uses records from across the U.S.

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
G4 Apparently secure worldwide. NatureServe
Nebraska
Not listed Not on Nebraska threatened and endangered species (163 Neb. Admin. Code ch. 4, § 004). NatureServe: SNR, not yet ranked in Nebraska. 163 NAC 4-004
Rare elsewhere
Other states where NatureServe ranks it rare or missing: LA (S1), MO (SH), ND (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?

For peopleNot well documented

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.

For petsNot well documented

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 fourpoint evening primrose in 15 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Arkansas, Illinois, Iowa, Kansas, Louisiana, Michigan, Minnesota, Missouri, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, Wisconsin.

Nebraska counties with USDA records: Adams, Antelope, Arthur, Blaine, Box Butte, Boyd, Brown, Buffalo, Butler, Cherry, Cuming, Custer, Dodge, Douglas, Franklin, Garden, Garfield, Greeley, Hall, Harlan, Holt, Hooker, Howard, Kearney, Keya Paha, Kimball, Knox, Lincoln, Logan, McPherson, Phelps, Sheridan, Sioux, Stanton, Thomas, Webster, Wheeler.

More Nebraska flowers

Scarlet beeblossom (Oenothera suffrutescens)

Scarlet beeblossom

Oenothera suffrutescens

Native

🌼 Few flowering records in NE
Yellow sundrops (Oenothera serrulata)

Yellow sundrops

Oenothera serrulata

Native

🌼 Few flowering records in NE
Common milkweed (Asclepias syriaca)

Common milkweed

Asclepias syriaca

Native

🌼 Blooms in NE: June–July

Sources