Dragon fruit or pitaya are a type of cactus, which produce either red or yellow fruit. The yellow fruit has thorns and this ...

The coming of autumn often makes trees harder to identify – but sometimes, it does the opposite. The black locust ( Robinia ...

It’s the branch of a tree, but this tree is no good for a tree house. Take a look at the thorns, which can be found up and down the trunk, and also potently arming the branches. You won’t be inclined ...

Invasives: The fast growing Callery and Bradford pear trees might be beautiful, but they wreak havoc on local ecosystems.

The image of a honey locust tree with thorns growing in spangles like cancer all over its stout trunk and spiny branches has been growing in my mind lately. But with three teenage sons now – two of ...