None of the seven acacia trees in the front yard of Sam Morse's home in La Feria, Texas, seem different from any of the others—or from their countless cousins that thrive in the Lower Rio ...

A moderate-to-fast-growing small evergreen (evergray?) tree, the purple-leaf acacia reaches 20 to 30 feet tall and wide. Its dense, spreading canopy is easily shaped as a single- or multi-trunk tree.

An enzyme in the nectar of acacia trees makes ants chemically dependent on their sugar. Photograph by Alexander L.Wild. Trees Trap Ants Into Sweet Servitude.

Purple fernleaf acacia is a low maintenance, drought tolerant evergreen tree with yellow flowers and purple leaves. The plant, native to Australia, is easy to grow in San Luis Obispo County ...

The Blackwood Acacia grows fast and aggressively to a dense 40 feet tall by 20 wide evergreen tree, whose branches are often brittle. The bark is dark gray and furrowed.

The acacia tree has an expected lifespan of 15 to 30 years. So when a 320-year-old tree fell in the village of Balambala in northeast Kenya last week, locals were understandably distraught.