Check out these bonsai azalea images:
Bonsai Azalea, Washington, DC
Image by Grufnik
A very old Satsuki Azalea grown from a whip shoot. From the Collection of the National Bonsai and Penjing Mueseum at The United States National Arboretum.
To learn more visit: www.usna.usda.gov/Gardens/collections/bonsai.html
Thanks to Kyle House for contributing information on the tree.
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Bonsai Azalea, Longwood Gardens
Image by Ed Gaillard