This is probably southern Africa's most common tree. It occurs in many different habitats and in many different forms. It grows up to 15 m in height, with rough, dark, red-brown to blackish bark. Paired and straight conspicuous white spines occur, especially on the lower branches. The flowers exude a sweet scent and are arranged in heads, attracting bees in search of pollen and nectar. Many other insects are attracted to the tree as well and, consequently, also birds, lizards and snakes. The slender, sickle-shaped pods split open from January onwards. This species is the host tree for several butterfly species. The presence of the tree is considered by farmers as an indicator of sweet veldt. Acacia karroo is a must for the garden although it has a relatively short life span for a tree. It grows rapidly in any soil and in any climate, flowering from 2-3 years of age.