Host an Event Volunteer Join Tickets

Support the plant database you love!


Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

Enter a Plant Name:
Or you can choose a plant family:
Oenothera macrocarpa ssp. macrocarpa (Bigfruit evening-primrose)
Marcus, Joseph A.

Oenothera macrocarpa ssp. macrocarpa

Oenothera macrocarpa Nutt. ssp. macrocarpa

Bigfruit Evening-primrose, Fluttermill, Missouri Evening Primrose

Onagraceae (Evening Primrose Family)

Synonym(s): Megapterium missouriense, Oenothera missouriensis

USDA Symbol: oemam

USDA Native Status: L48 (N)

Missouri Evening Primrose is a low, occasionally tufted, smooth to hairy perennial herb 4" to 24" tall. Stems are spreading to ascending from a thick woody root. Leaves are alternate, simple, narrowly lance-shaped to egg-shaped. Flowers are showy, solitary and yellow.


From the Image Gallery

61 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Fruit Type: Capsule
Size Notes: Up to about 2 feet tall.

Bloom Information

Bloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep


USA: AR , IL , KS , MO , NE , OK , TN , TX

Growing Conditions

Water Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Drought Tolerance: High


Conspicuous Flowers: yes
Interesting Foliage: yes
Attracts: Butterflies , Hummingbirds
Nectar Source: yes

Value to Beneficial Insects

Special Value to Native Bees

This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.


Propagation Material: Seeds
Description: Plant seed outside in the fall or early winter.
Seed Treatment: Germination is improved with 4 to 6 weeks of cold moist stratification.
Commercially Avail: yes
Maintenance: Requires little maintenance.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Lady Bird Johnson Wildflower Center - Austin, TX
NPSOT - Austin Chapter - Austin, TX

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Oenothera macrocarpa ssp. macrocarpa in USDA Plants
FNA: Find Oenothera macrocarpa ssp. macrocarpa in the Flora of North America (if available)
Google: Search Google for Oenothera macrocarpa ssp. macrocarpa


Record Modified: 2023-02-21
Research By: TWC Staff

Go back