Gardens and Zoos
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:Regional
:North America
:United States
:Washington, DC
:Science and Environment
:Gardens and Zoos
Gardens and Zoos Links
- United States National Arboretum Contains an array of display gardens, collections, and historical monuments set among native stands of eastern deciduous trees.
- Hardy Palm Trees and Ferns Showcases plants that can survive the area's often snowy winters.
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