Oenothera Species, Evening Primrose, Narrow-Leaf Evening Primrose, Shrubby Sundrops, Sundrops

Oenothera fruticosa subsp. glauca

Family: Onagraceae (on-uh-GRAY-see-ee) (Info)
Genus: Oenothera (ee-no-THEE-ruh) (Info)
Species: fruticosa subsp. glauca
Synonym:Oenothera glauca
View this plant in a garden



Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Sun to Partial Shade



Foliage Color:

Unknown - Tell us


12-18 in. (30-45 cm)


9-12 in. (22-30 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:


Propagation Methods:

By dividing the rootball

Seed Collecting:

Unknown - Tell us


This plant is said to grow outdoors in the following regions:

Buford, Georgia

Chicago, Illinois

Marion, Illinois

Waukegan, Illinois

Indianapolis, Indiana

Jeffersonville, Indiana

Nichols, Iowa

Hi Hat, Kentucky

La Grange, Kentucky

Louisville, Kentucky

Mc Dowell, Kentucky

Skowhegan, Maine

Pikesville, Maryland

Halifax, Massachusetts

Reading, Massachusetts

Somerville, Massachusetts

Dearborn Heights, Michigan

Royal Oak, Michigan

Lexington, Mississippi

Moberly, Missouri

Omaha, Nebraska

Bridgeton, New Jersey

Hightstown, New Jersey

Jersey City, New Jersey

Metuchen, New Jersey

Trenton, New Jersey

Brooklyn, New York

Croton On Hudson, New York

Crown Point, New York

Endicott, New York

Himrod, New York

Petersburg, New York

Poughkeepsie, New York

Romulus, New York

West Islip, New York

Cleveland, Ohio

Glouster, Ohio

Haviland, Ohio

Lorain, Ohio

Philomath, Oregon

Catasauqua, Pennsylvania

Clairton, Pennsylvania

Levittown, Pennsylvania

Port Allegany, Pennsylvania

Quakertown, Pennsylvania

Sayre, Pennsylvania

West Chester, Pennsylvania

Mount Pleasant, South Carolina

Cosby, Tennessee

Provo, Utah

Alexandria, Virginia

Manassas, Virginia

Richmond, Virginia

Spokane, Washington

Buffalo, West Virginia

Madison, Wisconsin

West Bend, Wisconsin

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Gardeners' Notes:


On Jun 3, 2016, LanfrancoLeo from Harrisburg, PA wrote:

I really like this plant!
It bloom beginning of June for 2 weeks. I have some plant in shade and some plant in a sun position. The shade limits the spreading behavior but also the abundance of the flowers. The groups of plants in a sunny position really make a bright yellow carpet when in bloom. The un-opened flower are red. Bee, especially the small metallic green bee (Halictidae) love them! Year after year I never saw so many bee concentrated to the same plant such as with sundrop. The bright yellow bloom open with the sun and close at the evening. It is one of my essential bee plant for the early-mid June period,


On Jun 11, 2011, Kim_M from Hamburg, PA (Zone 6b) wrote:

This Particular species (fruticosa subsp. glauca) produces Red Flower buds before opening Yellow, tinges of red on the stalks, and sometimes mistaken for other sundrops. I have the other common ones and there is definitely a difference.


On May 20, 2010, certified from Moberly, MO wrote:

My Sundrops made the transition from Branson MO to northern MO 25 years ago known only as Missouri Primrose.
Survived 2 more moves. Planted in full sun it never spread much but I loved the stunning yellow blooms.
Last year I moved the plants to semi-shade location and they have multiplied into what will be a beautiful drift of color. Now 24" tall. Definitely one of my favorite summer flowers.
Thank you for identifying my Sundrops.


On Jul 8, 2009, gsteinbe from Trenton, NJ wrote:

I got some from a friend who thought that they were buttercups. Just a few plants filled in under my mailbox very nicely within a couple years. That's a fairly shady spot (under the spreading branches of a big maple tree). They flower considerably, but all in one flush over a relatively short time. I've since gotten more from an aunt (who knew them as Evening Primrose) and planted them in a sunnier spot. I look forward to seeing the results in future years and hope that they'll bloom longer in the sun. I've got them with anise hyssop, which is blooming now for me, and I'm hoping that the yellow Evening Primrose and purple anise hyssop will complement each other well (my other planting of Evening Primrose in the shady spot under my mailbox was done blooming before the anise hyssop sta... read more


On Jun 28, 2008, straea from Somerville, MA (Zone 6b) wrote:

I know this as "Sundrops". It is a lovely plant that, for me, begins blooming in early to mid-June and usually continues throughout most of the summer. I have it planted in drier soil than it prefers and so far that has limited its spread, though not its floriferousness! Small bees and other small pollinators like its bright, cheery blooms as much as I do.


On Jul 25, 2006, hattieruth from Denver, CO (Zone 5b) wrote:

In Denver this plant's leaves and stems turn red in the Fall. I love it for it's 2 season color


On Apr 7, 2006, billyporter from Nichols, IA (Zone 5a) wrote:

They have a really great sunny yellow color that goes well with my peptol bismol colored penstemon. They spread, but are easily dug out. I look forward to them in the spring!


On Jul 3, 2005, Anika from Port Allegany, PA wrote:

Sundrops is a wonderful addition to my informal garden. It is aggressive enough to battle the bee balm but delicate enough not to overtake my whole bed. I started with a small clump from a local grower and now have several large clumps to enjoy and share. What a wonderful plant.


On Jun 18, 2005, bugaboo22 from Hightstown, NJ (Zone 6b) wrote:

Absolutely stunning even in their first season. Mine are very happy in full sun and have been blooming for weeks now.

The red in the flower buds offset the yellow blooms very nicely. It took me a while to find them, but I'm delighted to finally have them in my garden!


On May 25, 2004, Gardengirl1204 from Richmond, VA (Zone 7a) wrote:

Great little plant. Hardy grower. Stays green and grows flat to the ground in winter. Will spread, but is easily pulled up. Also, transfers very easily. You can literally pull one up and put it right in another place. No delicate digging needed.


On Jun 27, 2003, PeterMastro wrote:

I love sundrops! They're spectacular in a mass, and spread as rapidly as ajuga. I'm puttin' 'em all over the place and givin' 'em away, just a couple years after putting one in the ground - in the shade of a mature sycamore, no less! You can't go wrong with these beauties.


On Aug 4, 2002, lupinelover from Grove City, OH (Zone 6a) wrote:

Planting them in dense shade keeps them in their alloted space, but severely limits their bloomtime.


On Aug 1, 2002, haighr from Laurel, DE (Zone 7a) wrote:

These will fill up quite a large area and I find they do bloom for several months. They are fabulous for filling in those blank spaces of larger plants. They pull up easily and transplant to another location with very little fuss.


On Nov 29, 2001, poppysue from Westbrook, ME (Zone 5a) wrote:

The buttery yellow flowers of sundrops are an excellent plant for a splash of bright color. They require little care and are tolerent of many soil conditions. They spread to fill in a large area but are easily pulled out if they out grow their alloted space.