For example, data gathered on height, spring bud flush and fall bud set from the clonally-replicated poplars growing in three plantations in Oregon and California indicated that in warmer climates ...

Tulip poplar is also a common ornamental tree, prized for the beautiful yellow color of its leaves in autumn. Up-close, each leaf appears to resemble the Looney Tunes character Sylvester the Cat. Its ...