Acer glabrum ssp. douglasii

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USDA Hardiness zone: Zn4a -25º to -30ºF

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Acer glabrum ssp. douglasii

Rocky mountain maple or locally also known as Douglas maple is our form of a widespread and sweet small tree that ranges from the Yukon in Canada  to the highest  mountains of  northern Mexico. Our local variety is found in all of the mountainous parts of the state. This demure tree is the least planted of our native maples and deserves much more inclusion in our gardens. In the coast range it is found primarily above 2000′ and it can even be found lower in the Cascades. It follows the spine of the Ochocos in eastern Oregon up into the Blue mountains and Wallowa Mountains in the far north east. Rarely pole straight in stature its often multi-trunked and single trunked trees are in the minority in the wild. Ours are single trunks but multiple stems do not take away from the fresh green leaves and pretty to stunning fall color. The familiar maple leaves can achieve anything from dull yellow to shots of vermillion. Depending on the weather and tree. Soft gray bark.  To 25′ tall moderately fast. Tiny green flowers morph into rosy hued samaras in autumn. Regular water for the first several years. This tree does appreciate rich soil that retains moisture in the Willamette Valley. Excellent woodland tree or even more appropriate on the edge of a stand of trees where it receives at least half a day of sun. The most recent years stems are often sanguine red, nice contrast with the grass green elegant leaves. The most striking fall color is achieved with more sun. A mesic maple that often follows water courses or lines wet ground.  Single trunked trees are conical shaped and multi-trunked forms are more rounded and spreading. Deciduous.  Avoid blasting heat and sun. Oregon native plant.

Acer glabrum ssp. douglasii near Mount Hood,. Elevation 4500′.

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