Prometheum aizoon (Fenzl) 't Hart
Chaloupkaea aizoon, Cotyledon aizoon, Rosularia aizoon, Rosularia pallida, Rosularia tauricola, Sedum chrysanthum subsp. aizoon, Sedum chrysanthum var. aizoon, Umbilicus aizoon, Umbilicus pallidus
Prometheum aizoon, formerly known as Rosularia aizoon, is a succulent that forms rosettes of hairy, pale green to blue-green leaves. The rosettes grow up to 1.2 inches (3 cm) in diameter. Leaves are up to 0.8 inches (2 cm) long. Flowers are white, tubular, up to 0.5 inches (12 mm) long, and appear in summer on up to 4 inches (10 cm) long stems.
USDA hardiness zone 7a to 9b: from 0 °F (−17.8 °C) to 30 °F (−1.1 °C).
How to Grow and Care
Whether grown outdoors or in, these plants are good to forget about. Too much attention by nervous gardeners will kill the plant. When grown outdoors in a wet environment, make sure that the soil is sandy and well-draining. If you aren't careful, your plant will turn into rotten mush. Mix native soil with sand, if necessary. When grown indoors, a standard commercial cactus and succulent soil mix work well. In the event of an unhealthy plant, the first thing to examine is your watering habits.
The most common problem is root rot due to overwatering. If the soil is too wet, don't hope it will safely dry out so long as you don't water it for a while. This plant is best grown outdoors, and if you live in an area where winter's temperatures rarely go below -10°F (-23°C), this is the best for Rosularia.
When potted, these plants are very susceptible to vine weevil. The plant is often used as a bedding or groundcover plant.
See more at How to Grow and Care for Rosularia.
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