Aloe dichotoma (Kokerbom). USDA: 9-11. Light shade. Water summer,  keep dry during winter. Root rot prone, provide good drainage. Hardy to 23° F. Succulent tree, up to 30' tall, 20' wide. One of the largest aloes. Yellow flowers. Origin: South Africa (Namaqualand, Bushmanland), Namibia. Easy to grow from seed.