Trees that have thorns on the trunk are the honey locust and the coral tree. The honey locust, in particular, is notorious for the long and vicious thorns that grow on its trunk.

There is only one tree species with poisonous thorns, the black locust, that is native to North America.Though there are many toxic plants and many more plants with thorns, very few plants combine the two features.

Varieties of honeylocust, citrus, mesquite and hawthorn trees have thorns. Thorns are an adaption that trees developed as a way to ward off predators.


Trees with red berries on them include are the holly and the coffee tree. The holly is grown both for its red berries, which appear in the fall and winter, as well as for its glossy, dark green foliage.

Honey locust trees do not contain toxins, but black locust leaves, bark, and thorns do contain poison. Black locust thorns grow from one-fourth of an inch to one inch in length. Black locust tree thorns are toxic to peop...

One method of killing a palm tree is to drill several holes into its trunk and fill them with herbicide. Killing the tree may require several applications of herbicide.

The kind of indoor palm tree a person has depends on identifiers like the trunk and whether it's solitary or clustering. The shape of the leaves is also important. Palm leaves can be fan-shaped, feather, bipinnate, costa...