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Evening Primrose
Oenothera 'Lemon Sunset'

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




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


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

show all

Gardeners' Notes:


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 ha... read more


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.