Scientific Name
Lithops optica (Marloth) N. E. Br.
Common Name(s)
Living Stones
Scientific Classification
Family: Aizoaceae
Subfamily: Ruschioideae
Tribe: Ruschieae
Genus: Lithops
Etymology
The specific epithet "optica" (pronounced "OP-tee-kuh") means "optic" and refers to the eye-like appearance of the top of the leaf pairs of this species.
Origin
Lithops optica is endemic to Namibia.
Description
Lithops optica is a small succulent with obconical to almost club-shaped bodies composed of two opposite leaves, each with a smooth texture, ranging from whitish-grey to grey-green, and a transparent window at its upper surface. The bodies can grow up to 1 inch (2.5 cm) in diameter, and their stems are very short and not visible.
Each body will produce a solitary, daisy-like flower with bright white petals, sometimes with pink tips. The flowers can reach a diameter of 1 inch (2.5 cm).
Hardiness
USDA hardiness zone 10a to 11b: from 30°F (-1.1°C) to 50°F (10°C).
How to Grow and Care
Lithops develop a new set of leaves every year, with new leaves emerging in the fall, growing through winter, and continuing into summer. The plant will go dormant in late summer, and water should be severely restricted to prevent bursting leaves. The flowers appear near the end of summer or fall, first showing up as a small bud forcing its way between the leaves, and growth will begin again. It's safe to water during this period. The leaves will still be growing into the winter, but you should stop watering, even as the older leaves shrivel up and encase the new growth. In the spring, it's safe to begin lightly watering again as the plant starts to grow again, heading toward its summer dormancy period and the emergence of new leaves in the fall.
Lithops are very slow-growing, small plants, making them ideal as houseplants (once you get the hang of their watering schedule). Older plants form attractive clumps of "pebbles" in their pots, which are highly prized. In general, plants should only be repotted if there are cultural problems (such as soggy soil) or the plant has outgrown its container, which typically occurs every several years.
See more at How to Grow and Care for Lithops.
Cultivars
Links
- Back to genus Lithops
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
Photo Gallery
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