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Fremont's Evening Primrose
Oenothera macrocarpa subsp. fremontii

Family: Onagraceae (on-uh-GRAY-see-ee) (Info)
Genus: Oenothera (ee-no-THEE-ruh) (Info)
Species: macrocarpa subsp. fremontii
Synonym:Megapterium fremontii
Synonym:Oenothera fremontii

Category:

Alpines and Rock Gardens

Perennials

Height:

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

Spacing:

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)

Hardiness:

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)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Foliage:

Herbaceous

Silver/Gray

Other details:

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

Drought-tolerant; suitable for xeriscaping

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

From herbaceous stem cuttings

From seed; direct sow outdoors in fall

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

From seed; stratify if sowing indoors

Seed Collecting:

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

Properly cleaned, seed can be successfully stored

Regional

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

Lincoln, Nebraska

Laramie, Wyoming

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Nov 18, 2008, KSBaptisia from Beatrice, NE (Zone 5b) wrote:

A very attractive subspecies (sometimes listed as a species in its own right) of Big Fruit Evening Primrose. It has very limited natural range of south central Nebraska/north central Kansas, but is easily grown in sunny and dry locations.