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
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
Plant CharacteristicsDuration: Perennial
Fruit Type: Capsule
Size Notes: Up to about 2 feet tall.
Bloom InformationBloom Color: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep
DistributionUSA: AR , IL , KS , MO , NE , OK , TN , TX
Growing ConditionsWater Use: Low
Light Requirement: Sun , Part Shade
Soil Moisture: Dry
Drought Tolerance: High
BenefitConspicuous Flowers: yes
Interesting Foliage: yes
Attracts: Butterflies , Hummingbirds
Nectar Source: yes
Value to Beneficial InsectsSpecial Value to Native Bees
This information was provided by the Pollinator Program at The Xerces Society for Invertebrate Conservation.
PropagationPropagation 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 DirectoryAccording 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 ReferenceWebref 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 resourcesUSDA: 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
MetadataRecord Modified: 2023-02-21
Research By: TWC Staff