The Arizona ash (Fraxinus velutina), also known as velvet ash, is a pretty, lush, deciduous native shade tree that does well in our climate. In the Tucson area, it’s native habitat is riparian, so it ...

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We studied the influence of climate variables, stream flow, and topography on regeneration and growth of several riparian tree species (Acer negundo, Alnus oblongifolia, Fraxinus velutina, Juglans ...

If you are looking for a tree to plant whose leaves turn color in Los Angeles when days shorten and temperatures cool, now is the time to visit a nursery and examine them personally. Even among trees ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...