African Milk Tree (Euphorbia trigona) is a tall, rugged, easy-care plant with thorns. It should come as no surprise that many people think of it as a cactus.
The fact is, this thorny succulent hails from West Africa where it grows wild in dense, thorny thickets.
The African Milk Tree are considered succulent plants even though they have leaves. Cacti (with the exception of Christmas and Easter Cactus) do not grow leaves.
The leaves of the African Milk plant are small and short-lived.
They grow along the ridges that make up the corners of the plant’s rectangular stems. Thorns also emerge from these ridges.
The thorns grow in sets of two, and single leaves emerge from between them.
When grown outdoors, the plant may produce small white or yellow flowers. Indoors, it is unlikely to bloom.