Aeonium haworthii aka Pinwheel

Aeonium haworthii, known as pinwheel, is a small evergreen succulent subshrub. It belongs to Crassulaceae, the stonecrop family. Its native range lies on Tenerife in the Canary Islands. This is a plant of subtropical climates. It is not native to Britain or Ireland. Its bushy shape and lasting leaves give it year-round interest.

Plants reach about 0.3–1.6 feet (0.1–0.5 metres) in height and spread. The RHS gives a maturity period of ten to twenty years. Each branch ends in a rosette of broad, fleshy leaves. The leaves have a grey-green colour and remain through winter. These rosettes form the main feature of the plant. Small flowers grow in branched clusters called panicles. Their colour is pale yellow, sometimes with a pink tint. The supplied profile does not give a flowering season.

Good drainage is a key part of its care. The RHS lists both sandy and loamy soils as suitable. It accepts acid, neutral, and alkaline soil conditions. For plants under glass, use a standard cactus compost. Give them bright light filtered from harsh direct sun. The profile also lists full sun as a suitable position. Choose a sheltered place, with an east-facing or south-facing aspect. These needs suit pots, patios, and gardens with a Mediterranean climate.

Water moderately while the plant is growing. During this period, apply balanced liquid feed every two or three weeks. Keep the compost almost dry during winter. The RHS rates its UK hardiness as H1C. This rating covers a minimum range of 41–50°F (5–10°C). It allows outdoor growing in summer rather than year-round outdoor culture. In Britain, the RHS recommends growing it under glass. A greenhouse or conservatory can provide the protected setting it needs.

Routine pruning is not needed. The RHS reports few disease problems, though aphids and mealybugs may attack. New plants can come from seed or rosette cuttings. Sow seed in spring at 66–75°F (19–24°C). Keep rosette cuttings at about 64°F (18°C) until roots form. During rooting, keep the compost barely moist. Its compact size suits container planting where space is limited. The supplied evidence does not establish edible uses or toxicity. Do not treat that lack of information as proof of safety.