Crassula marniana

Adapted to the distinct winter-rainfall patterns of the Cape, this species does the bulk of its growing when the weather cools down. In a mild coastal climate like Zone 10b, it performs beautifully outdoors year-round. It thrives perfectly under the protective diffusion of a polycarbonate and wood shade house, which provides the ideal balance of intense, filtered light necessary to bring out its striking red margins while shielding it from scorching afternoon extremes. During late winter or early spring, it produces tight clusters of tiny, star-shaped pale pink or white flowers at the very tips of the stems. Because the leaves are so tightly stacked, the microscopic gaps create perfect, protected micro-environments for pests; routine scouting is critical to catch mealybug or mite infestations early before they establish deep in the leaf axils where contact sprays can't reach. It requires a highly porous, fast-draining mineral mix (such as 70% pumice and coarse grit mixed with 30% loam). If potting into hand-crafted raw cement planters, ensure the concrete has been fully cured and leached to prevent an alkaline spike from burning the fine roots. Water deeply during the cooler active months, allowing the soil to dry out entirely between waterings, and reduce moisture drastically during the peak heat of summer dormancy to prevent stem rot.