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Rock Live-forever
Scientific Name: Dudleya saxosa ssp. collomiae (M.E. Jones) Britton & Rose
Synonym: Dudleya collomiae, Echeveria collomiae, Cotyledon saxosa
Family: Crassulaceae
Rock Live-forever (Dudleya  saxosa ssp. collomiae)
Dudleya saxosa ssp. collomiae
Recommended Temperature Zone:
sunset: 12,13,16,17,21-24
USDA: 9-12

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

Heat Tolerance: Avoid afternoon sun in summer in Phoenix

Sun Exposure: Full sun

Origin: Mojave Desert: USA (California, Arizona)

Growth Habits: Succulent perennial rosette

Watering Needs: Little water when established, water in the summer for best appearances


The Dudleya saxosa is locally abundant in the Mojave Desert, it is found clinging to rock faces. Its foliage is blue-glaucous. This subspecies is a Salvage Restricted Protected Native Plants in Arizona. It is a host for the Sonoran Blue butterfly

D. saxosa collomiae flower, the plant visible below is a different Dudleya

Rock Live-forever (Dudleya  saxosa ssp. collomiae)

Cultural Practices:
Dudleyas like a soil well drained and rich in humus. Watch for mealy bugs.

Blooming Habits:
The Dudleya saxosa ssp. Collomiae has pink peduncle, green calyx, yellow petals and anthers. All the flower parts have a light pink tinge when immature. The Dudleya saxosa ssp. aloides has lavender to pink flowers. They bloom from May to June.

Fruiting Habits:

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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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