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.

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

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 ...