Oenothera nuttallii (Nuttall's Evening Primrose)

Plant Info
Also known as: White-stemmed Evening Primrose
Family:Onagraceae (Evening Primrose)
Life cycle:perennial
Habitat:sun; dry; sandy soil, prairies
Bloom season:June - August
Plant height:1 to 3 feet
Wetland Indicator Status:none
MN county distribution (click map to enlarge):Minnesota county distribution map
National distribution (click map to enlarge):National distribution map

Pick an image for a larger view. See the glossary for icon descriptions.

Detailed Information

Flower: Flower shape: 4-petals

[photo of flower] Flowers are 1 to 2 inches across, 4 white notched petals with a spot of pale yellow at the base of each petal. There are 8 long yellow stamens surrounding a style with a cross-shaped stigma in the center. Behind the flower are light green to reddish sepals and a long light green to reddish calyx tube that resembles a flower stalk. One plant can have several flowers, with 1 to a few at the end of branching stems. The flowers open in the evening and close up in the morning.

Leaves: Leaf attachment: alternate Leaf type: simple

[photo of leaves] Leaves are very narrow with a pointed tip and no leaf stalk, alternately attached. The leaves along the main stem are up to 3 inches long and ¼ inch wide with tiny widely-spaced teeth; they are rather shorter on the branches and teeth aren't visible. The stem is smooth and nearly white.


The flower photos posted here were taken early in the morning. They were starting to close before 9am and were completely closed well before noon. The stems of Nuttall's Evening Primrose are said to be covered in a peeling white bark, though I did not observe this peeling myself. This species is easy enough to ID even when the flowers are closed, as the white stems and long, narrow leaves are quite distinct. The location where these images were taken was a tiny postage stamp of remnant prairie along the railroad right-of-way at Long Lake Regional Park in Ramsey County. As part of a city redevelopment project, the railroad destroyed the spot in early 2009 after dismantling  a section of the tracks. This species has not been seen there since. The last (and only) herbarium record for Ramsey County was collected in 1895, so these plants you see here may have been the last of their kind in Ramsey County. Life is fleeting, and all such native remnants are at risk.

Native Plant Nurseries, Restoration and Landscaping Services ↓

Map of native plant resources in the upper midwest

  • ReWild Native Gardens
  • Shop for native seeds and plants at PrairieMoon.com!
  • Shooting Star Native Seeds - Native Prairie Grass and Wildflower Seeds
  • Morning Sky Greenery - Native Prairie Plants
  • Natural Shore Technologies - Using science to improve land and water

More photos

Photos by K. Chayka taken at Long Lake Regional Park, New Brighton, Ramsey County.


Have you seen this plant in Minnesota, or have any other comments about it?

Posted by: Greta Gramig - Buffalo River State Park
on: 2019-07-23 15:16:46

I saw Nuttall's evening primrose at Buffalo River State Park, 7/21/2019

Posted by: Frank@Mound - Bronson State Park
on: 2023-01-14 10:52:43

Saw one plant and photographed it. It was September. The only lacking item (based on my photo) is the nearly white stem. But what else could it be...

Post a comment

Note: All comments are moderated before posting to keep the riff-raff out. An email address is required, but will not be posted—it will only be used for information exchange between the 2 of us (if needed) and will never be given to a 3rd party without your express permission.

For info on subjects other than plant identification (gardening, invasive species control, edible plants, etc.), please check the links and invasive species pages for additional resources.


Note: Comments or information about plants outside of Minnesota and neighboring states may not be posted because Id like to keep the focus of this web site centered on Minnesota. Thanks for your understanding.