Stemless Evening Primrose
Lavauxia triloba

Family: Onagraceae (on-uh-GRAY-see-ee) (Info)
Genus: Lavauxia
Species: triloba (try-LO-buh) (Info)
Synonym:Oenothera triloba

Category:

Annuals

Biennials

Groundcovers

Height:

under 6 in. (15 cm)

Spacing:

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

Hardiness:

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

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Unknown - Tell us

Bloom Color:

Pale Yellow

Bloom Time:

Late Winter/Early Spring

Foliage:

Deciduous

Herbaceous

Blue-Green

Smooth-Textured

Other details:

May be a noxious weed or invasive

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; direct sow after last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Regional

This plant has been said to grow in the following regions:

Oak Lawn, Illinois

Lowell, Indiana

Barbeau, Michigan

Laingsburg, Michigan

Warren, Michigan

Wayne, Michigan

Madbury, New Hampshire

North Tonawanda, New York

Salter Path, North Carolina

Maumee, Ohio

Cambridge Springs, Pennsylvania

Erie, Pennsylvania

Austin, Texas

Dallas, Texas (2 reports)

Dripping Springs, Texas

Fort Worth, Texas

Hondo, Texas

Kerrville, Texas (2 reports)

San Antonio, Texas (3 reports)

Santo, Texas

Spring Branch, Texas

Hustisford, Wisconsin

Waukesha, Wisconsin

show all

Gardeners' Notes:

8
positives
0
neutrals
0
negatives
RatingContent
Positive

On Jan 30, 2013, davidlnorman from BARBEAU, MI wrote:

This plant was raised in my Mothers garden, with great success from the early 1950's to the late 1990's when she passed away. She gardened in Plymouth, Mi 48170.
I have raised this plant in the Barbeau, Mi. 49710 area off and on since the 1970's. We didn't know the correct name of this plant until now. It had been called the, "desert flower" by my family. My sister gardens in the Plymouth, Mi. 48170 area, and has obtained seeds for the plant, and will start them soon. This plant has been a constant source of amusement for the children in our family for years. My experience with the plant in Barbeau, indicates that it reseeds, and does not over winter unless we have a very consistent, deep snow cover.




Positive

On Jul 12, 2012, KatCSimms from Wayne, MI wrote:

I've had this plant in my flower bed for about 15 years now. Fun to watch open, have shared the experience with many people, including family & neighbors. They come back every year here in Michigan

Positive

On Mar 26, 2012, hatman from Lake Dalecarlia, IN wrote:

This plant is totally hardy in NW Indiana. My original one survived over winter in 2002 outside in a 4 inch pot. This is one of the coolest flowers you will have in your garden. Watching them open their flowers at sunset will be something you'll never forget. They grow great in a sunny area with good drainage. Be sure you plant them in a spot where you want them to be permanently because they form a taproot, and can't be moved later. Educate your family about them because they look pretty much like dandelions when they are not in bloom, and may get become collateral damage by those with good intentions.

Positive

On Jun 12, 2011, nickelnog from Raleigh, NC (Zone 7b) wrote:

Appeared at the edge of my sound front lawn here on Bogue Banks after I put drip line in. Grew amazingly fast. Four pale yellow petals appear like 8, since they are more lobed than photos here. Blossoms completely closed by morning. Looks pretty weedy during the day but lovely at sunset and evening. Wish I could move it though.

Positive

On Oct 21, 2010, vicif from Laingsburg, MI wrote:

i have at this plant for years in the middle of michigan. we have cold winters and it comes back every year. it is so imteresting to watch it open up in the evening. slow down, get a glass of your favorite beverage, take out a chair, sit down and watch them shake and shake and then open. it's a great experience that i have shared with all my neighbors and friends.

Positive

On Mar 7, 2008, altagardener from Calgary, AB (Zone 3b) wrote:

Hardy in zone 3; fascinating to watch the flowers open at dusk. Seeds are embedded at ground level in the base of the plant, as the flower stems are actually extremely elongated styles.

Positive

On Jul 6, 2007, smhscholz from Erie, PA wrote:

I love this plant. As children, my siblings and I used to wait and watch the flowers open every summer. I was thrilled to find it again as an adult--it is not sold in stores. Plant it where you sit in the evenings so you can watch the flowers open. They last only one night. Don 't deadhead so they reseed. They don't transplant well because they have a long taproot like a dandelion. Actually the leaves look almost identical to a dandelion so you have to be careful you don't mistake it for a dandelion and weed it. I grow transplants in peat pots so you can plant the whole thing without disturbing the taproot.

Positive

On Mar 18, 2007, htop from San Antonio, TX (Zone 8b) wrote:

Stemless Evening Primrose (Oenothera triloba) is a native plant and is a threatened species in Kentucky. It has become extinct in Indiana. In Texas, Stemless Evening Primrose can be found in clay or dry limestone soils of the Blackland Praire, Rolling Plains and Edwards Plateau Regions in dry open areas with drained soil such as barrens, prairies, floodplains, slopes, hillsides, rock outcrops in fields and grassy areas. It is a frequent lawn invader. The plant forms a rosette shape like a dandelion with broadly lobed leaves low to the ground. Because it is very low growing (usually 8 inches tall or less), it withstands mowing very well. The up to 4.5cm (1.75 ") wide flowers are bright yellow when they open about half an hour before sunset. When they close about noon the following day, th... read more