About 35, see text Aeonium, the tree houseleeks, is a genus of about 35 species of succulent, subtropical plants of the family Crassulaceae.

[1] While most of them are native to the Canary Islands, some are found in Madeira, Cape Verde, Morocco, in East Africa (Ethiopia, Somalia, Uganda, Tanzania and Kenya) and Yemen.

A feature which distinguishes this genus from many of its relatives is the manner in which the flowers bear free petals, and are divided into 6 or 12 sections.

Species accepted by Plants of the World Online as of April 2023:[4] Morocco Much hybridising has been done, resulting in several cultivars of mixed or unknown parentage.

[13] UK national collections of aeoniums are held by Mellie Lewis at Clun in Shropshire[14] and by Inverewe at Poolewe, Wester Ross in Scotland.