The Sandbox Tree is a fast-growing, semi-deciduous tree. It is native to tropical parts of South America and the Amazonian Rainforest. It is considered to be one of the most dangerous plants in the world. The tree has grey bark covered with cone-shaped spikes. It has different male and female flowers. Once fertilized, the female flowers produce the pods containing the Sandbox Tree’s exploding seeds. Its fruit looks like little pumpkins, but once they dry into seed capsules, they become ticking time bombs.