Aloe rauhii aka White Aloe

Aloe rauhii, or snowflake aloe, comes from southern Madagascar. It belongs to the Asphodelaceae family and is a perennial succulent. Its native range includes dry scrub and desert habitats. It grows among thick shrubs on sandstone. Gardeners grow this small aloe for its marked leaves and flowers. It suits pots, rock gardens, and gardens with little water.

The plant has little or no stem and forms dense clumps. Each rosette stands about 0.3 feet (0.1 metres) tall. Rosettes span about 0.3–0.4 feet (0.1–0.12 metres), sometimes reaching 0.7 feet (0.2 metres). RHS gives a cultivated height and spread of 0.3–1.6 feet (0.1–0.5 metres). The fleshy leaves taper to sharp tips. They range from green to grey-green, with pale marks. Many marks have an H shape and can cover most of each leaf. Small white teeth line the leaf edges. Strong sun can turn the leaves brown or purple-orange.

Flower stalks rise to about 1 foot (0.3 metres). They usually stay unbranched, though some form branches. Loose clusters hold small, tube-shaped flowers above the leaves. Their colour ranges from pink-orange to scarlet, with paler mouths. Bloom dates vary among the sources. RHS lists summer flowers, while Chicago records January and February. LLIFLE reports flowers through the year, with more in winter. The leaves stay on the plant through all seasons.

Grow it in a pot with a mix that drains well. RHS recommends peat-free cactus compost or loam-based compost with added grit. Sources support full sun, partial shade, or filtered sun. Move shade-grown plants into strong sun in stages to limit scorch. Water during growth, but give very little water during winter dormancy. The plant withstands drought and dry, shallow, rocky soil. It grows slowly and may lose space to faster plants. RHS rates it H1B; Chicago lists USDA zones 10–11. In cooler climates, it suits a houseplant or heated greenhouse.

Scale insects and mealybugs may attack this aloe. Wet soil can cause root or crown rot. Otherwise, sources report few major pest or disease problems. Remove old flower stalks after bloom. Grow new plants from seed or separate offsets in late spring or early summer. RHS warns that eating it can harm people and pets. Wear gloves and protective gear when handling it.