10 Seeds Tree Aloe Seeds (Aloe Arborescens) Flowering Succulent- Perennial Medicine Plant Aloe arborescens. Sunset: 8-9,13-24; USDA: 9-11. Light shade in hot gardens. Moderate water summer. Heat tolerant. Hardy to 25 F. Clustering rosettes becoming a large shrub, up to 16' tall. Dormant during winter. Orange / Red flowers. Origin: Coastal southern Africa.