Rhododendron Species Botanical Garden
Federal Way, WA
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R. agastum

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Attractive early-blooming evergreen shrubs with pale to deep rose flowers.  The flowers are pale to deep pink or sometimes white flushed pink but always blotched and usually spotted.  Recent field work has proven that this “species” is actually a natural hybrid probably resulting from crosses between irroratum  and arboreum ssp. Delavayi and possibly arboreum ssp. Delavayi x decorum.  Rare in cultivation and found only in W Yunnan and Guizhou (?), China where it occurs in thickets and forests from 5,000 (?) to 11,000 ft.

 

 

1995sd241  PW#95  (0 to +10\R1\8).  Seedlings from seed collected at 5,500 ft. in Guizhou, China.