Scientific: Oenothera speciosa var. berlandieri (formerly O. berlandieri)
Common: evening primrose or Mexican evening primrose
Family: Onagraceae
Origin: Texas into Mexico

Hardiness zones
Sunset
All zones
USDA All zones

Landscape Use: Dry landscape ground cover for large open, informal spaces, container plant, floral accent

Form & Character: Prostrate and vigorously spreading herbaceous perennial, loose and spreading, informal, festive when in bloom, invasive

Growth Habit: Prostrate and spreading by underground rhizomes and above ground stolons, most active in growth during cooler weather of the year.

Foliage/Texture: Variable dark green with sometimes red margins of splotches, entire to pinntified, medium fine texture

Flowers & Fruits: Solitary, auxiliary pink flowers to 2" across with nearly fused petals, fruit inconspicuous

Seasonal Color: Pink flowers in the spring and fall

Temperature: Tolerant, though vigor is suppressed by the heat of  a Phoenix summer

Light: Full sun best, will accept some shade though flowering will be less

Soil: Tolerant to well-drained

Watering: Infrequent watering during summer is needed or else this herbaceous plant will go dormant or die back. Drought or cold weather encourages red pigmentation in foliage.

Pruning: Shear or mow to ground during Summer to Fall

Propagation: Seed, division, root cuttings

Disease and pests: Foliar bacterial spotting during wet periods or if overhead sprinkler irrigated.

Additional comments: This ground cover is bright and cheery when in bloom, but can become overly invasive if not planted in a in a concrete restricted or constrained planter bed. The cultivar 'Siskiyou Pink' is a profuse pink bloomer in the spring.