Southwest Oklahoma is not known for its large selection of trees for the landscape.However, with the right selection of the ...

Here are five of the more unusual trees you might want to spot on your travels. The national tree of Yemen is so called because of the deep red resin in its bark which appears to bleed when cut.

Most of us will have an aloe as a houseplant, but this strange-looking tree boasts the familiar long succulent leaves at the end of its bare branches, all supported by a peeling trunk. It got its ...

Unusual species are included such as the dawn redwood, the copper beech, the Lombardy poplar, the Italian alder, and the tree of heaven which is native to China. The 22-tree walk also includes an ...

Blue rings found in the stems of trees and bushes in Norway point to a historic cold period in the late 1800s, but the exact cause of this climatic event remains unclear, scientists say.