The Tree of Heaven attracts lanternflies and helps them multiply. Removing this invasive species can cut off their breeding ...

Sap is the 'blood' of a tree, helping to move nutrients from the roots to the limbs. Some sap is not unusual, but excessive amounts may mean trouble. Learn what it means when you notice a lot of sap, ...

Incorrect pruning, particularly topping, is the surest way to ruin a tree. If it doesn’t kill the tree outright, it will ...

When temperatures turn to freezing from late October to early December, the wingless female climbs the nearest tree and mates with the male.

The tree of heaven is anything but. Native to parts of China and Taiwan, this invasive tree spreads quickly, and there's ...