tree aenium
Aeonium arboreum (L.) Webb & Berthel.
Tree aeonium carries a rosette of fleshy leaves at the end of each branch. The Royal Horticultural Society describes a sparsely branched succulent subshrub reaching about 1.5 metres. Plants of the species assessed in its British trials had apple-green foliage and a compact, branched habit. RHS: Aeonium arboreumRHS Aeonium trial results
Botanical name
Kew accepts Aeonium arboreum (L.) Webb & Berthel. as a species. Kew POWO: Aeonium arboreum
Recognizing the plant
Spoon-shaped leaves overlap in terminal rosettes, giving Aeonium arboreum its distinctive tiered outline. When it blooms, small yellow flowers collect into large, cone-shaped panicles above the foliage. It is an evergreen plant, and the RHS lists a mature height and spread of about 1–1.5 metres. RHS: Aeonium arboreum
Bloom window
United Kingdom, RHS garden trials
The RHS records spring flowering for Aeonium arboreum in its 2022–2024 British garden trials. This is a cultivated observation from the United Kingdom. RHS Aeonium trial results
Native range
Kew places its native range in the Canary Islands and southwestern Morocco, where it belongs to the subtropical flora. Kew POWO: Aeonium arboreum
A growing note
For greenhouse cultivation, the RHS recommends loam-based compost with extra grit, moderate watering during growth and none during dormancy. Its H1C rating calls for protection from cold, with outdoor growing restricted to summer in UK conditions. RHS: Aeonium arboreum
Botanical sources
Reviewed 2026-10-11. Seasonal development varies with location and growing conditions.