Aeonium Arboreum – Atropurpureum, Dark Purple Houseleek Tree is a member of the Crassulaceae family of plants. Aeonium Arboreum is an evergreen sub-shrub with deep red burgundy leaves. It has yellow flowers in spring but it is the leaves that are really showy. Grow it in the sun and plant it in well-drained soil. Aeonium Arboreum grows almost 1 meter tall. This is a mild climate plant and in colder climates it should be grown in a container.