Photo by Melody

PlantFiles: Evening Primrose
Oenothera 'Lemon Sunset'

Family: Onagraceae (on-uh-GRAY-see-ee) (Info)
Genus: Oenothera (ee-no-THEE-ruh) (Info)
Cultivar: Lemon Sunset

One vendor has this plant for sale.

3 members have or want this plant for trade.


18-24 in. (45-60 cm)

12-15 in. (30-38 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
Pale Yellow
Bright Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall


Other details:
Flowers are fragrant
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From seed; sow indoors before last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

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By LilyLover_UT
Thumbnail #1 of Oenothera  by LilyLover_UT

By tiffanya
Thumbnail #2 of Oenothera  by tiffanya

By kniphofia
Thumbnail #3 of Oenothera  by kniphofia

By kniphofia
Thumbnail #4 of Oenothera  by kniphofia

By joesinay
Thumbnail #5 of Oenothera  by joesinay

By poisondartfrog
Thumbnail #6 of Oenothera  by poisondartfrog


1 positive
1 neutral
No negatives

Gardeners' Notes:

Neutral tiffanya On Aug 26, 2005, tiffanya from Sumner, WA (Zone 8a) wrote:

Positive: The tag said it was a "short-lived" perennial, but mine bloomed from May into the second week of August. Maybe the "short-lived" meant the blossoms -- they do die quickly. But for every dead bloom you pick off, a new one pops up in its place. I just kept dead-heading it...and it kept blooming! Very easy to grow. Mine is behind a 2.5-foot-high rhodie and the sundrop flowers look great popping over the top of the rhodie. :-)

Negative: Invasive. Self-seeds. If left unattended, the roots spread in a network that requires heavy cutting/tugging to remove. Thus, best to pluck out new growth when it first appears rather than letting it get too big before removing. I get out and weed out the new starts that I don't want about 2-3 per year. Not too bad, but if you want a hands-off garden and to control this to a small area, it might not be the right plant for you.

Positive LilyLover_UT On Jan 17, 2005, LilyLover_UT from Ogden, UT (Zone 5b) wrote:

This lovely evening primrose has light lemon-yellow blooms that fade to peachy-red. The fragrant blooms open in the evening, staying open until the following afternoon. It's a drought-tolerant plant that prefers well-drained soil in full sun.


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

Barbourville, Kentucky
Wayland, Massachusetts
Blissfield, Michigan
Utica, New York
Greensboro, North Carolina
Greensburg, Pennsylvania
Wilkes Barre, Pennsylvania
Salt Lake City, Utah
Lexington, Virginia

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