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Because it is special to Arizona, California and Sonora's desert environment.
The State Bird of Arizona is the Cactus Wren. Saguaro cactus bloom is the official state flower in Arizona. Palo Verde is the official state tree in Arizona.
the porcupine
Palo VerdeSource(s): AZ.gov (The State of Arizona)
Arizona I'm positive.
The western hemlock was chosen to be Washinton's state tree in 1947.
The Arizona Tree Frog since 1986.
Arizona
It was chosen in 1945.
never ever says why the tree was select
The Palo Verde.
It is the yellow palo verde.