Western Evening Primrose (Calylophus hartwegii)

Description: Somewhat upright and bushy plant with narrow leaves and soft yellow cup flowers that open in the evening and close the next afternoon shortly before new flowers open. This plant prefers fast draining soil and loves reflected heat making it an excellent choice for a rock garden or rocky slope. Deadheading and giving it some summer water will prolong the flowers. Cut back to 6-8 in the autumn to reshape.

Family: Onagraceae

Synonym(s):

USDA Symbol: CAHA14

Duration: Perennial

Habit: Herb

Size Class: 0-1 ft.

Bloom Color: Yellow

Bloom Time: Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov

Water Use: Low

Light Requirements: Part Shade

Soil Moisture: Dry

Bloom Notes: Native Habitat: Prairie, Plains, Meadows, Pastures, Savannahs

Missing Images: Plant, Leaf, Close-Up, Fruit-Seed

Data Completeness: Complete

ATTRIBUTION: All of the Texas Wildflower images in this post are copyrighted and are the exclusive property of Terry B. Kahler. Reproduction without explisit written consent is prohibited. Some of the information contained in this section was taken from the Lady Bird Johnson Wildflower Center website and is being used under their terms of use. Redistribution from this site is prohibited. Additional information contained in this section was taken from the USDA website including the USDA code.

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