An acacia is a type of tree or shrub known for its delicate, feathery leaves and often thorny branches. Acacias grow in warm climates around the world, particularly in Africa, Australia, and parts of the Americas. Many species have long, sharp thorns that protect them from animals trying to eat their leaves.

These trees are remarkably tough survivors. In African savannas, acacias can endure months without rain, sending deep roots into the soil to find water. Their distinctive flat-topped shape provides shade for animals like elephants and giraffes, which nibble on their high branches despite the thorns. Some acacia species have a surprising partnership with ants: the trees provide hollow thorns for the ants to live in, and in return, the ants attack any animal that tries to eat the tree's leaves.

Acacias produce clusters of small, fluffy yellow or white flowers that look like little pompoms. These flowers attract bees, and acacia honey is prized for its light, delicate flavor. The wood from some acacia trees is incredibly hard and durable, used for everything from furniture to fence posts.