Neem
The trunk is comparatively short, straight and may reach a diameter of 1.2 m. The bark is hard, fissured or flaking, and whitish-grey to reddish-brown. The sapwood is greyish-white and the heartwood reddish when initial exposed to the air becoming reddish-brown following exposure. The root system consists of a well-built taproot and well developed lateral roots.
But Neem is isolated more than a tough tree that grows vigorously in difficult places. Among its lots of benefits, the one that is most curious and immediately practical is the control of ranch and house hold pests. Some entomologists at the present conclude that neem has such remarkable powers for controlling insects that it will usher in a new period in safe, natural pesticides.