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Sundrop, Sierra Sundrop
Scientific Name: Calylophus hartwegii (Benth.) P.H. Raven
Synonym: Oenothera hartwegii
Family: Onagraceae
Sundrop, Sierra Sundrop (Calylophus  hartwegii)
Calylophus at the Phoenix Desert Botanical Garden fall sale
Recommended Temperature Zone:
sunset: 2-3,10-13
USDA: 9-12

Frost Tolerance: Hardy in Phoenix to 20F (-6C)

Sun Exposure: Full sun to part sun

Origin: USA (Arizona, New Mexico, Texas), northern Mexico

Growth Habits: Perennial up to 8 inches tall (20 cm), 2 feet in diameter (60 cm)

Watering Needs: Moderate water

Propagation: Clump division

Blooming Habits:

Fruiting Habits:

The yellow, 1 inch wide flowers appear from spring to fall. The plant is dormant in winter.

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Desert-Tropicals is dedicated to provide gardening advice, gardening ideas, and information about flower of all kind for landscape and collections. We try to check carefully the identification of the plants on the illustrations as well as the other information from the page, but occasionally errors do occur. if you notice anything that needs to be changed please contact us. Thanks.

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