Rhododendron Species Botanical Garden
Federal Way, WA
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R. sperabile

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sperabile

 

Richly indumented species with imperial red trusses, but slow, late growth

 

1970/012  WW  (+10).

 

sperabile var. sperabile

 

Shrubs, 3 to 6 ft.  Flowers (April) are crimson to scarlet.  Needs some protection in most gardens to produce good foliage and flowers.  Found among scrub and on cliffs at 10,000 to 12,000 ft.  China, NE Upper Burma.

 

1979/119  KW#7124:Borde Hill  (+10).

 

sperabile var. weihsiense

 

Evergreen shrubs with densely white tomentose branchlets. The lower surface of the leaves is covered with a dense woolly white indumentum. The tubular-bell-shaped flowers (mid-spring) are scarlet to crimson. A rarely grown but attractive species with brightly colored flowers. Best in light shade with excellent drainage. Native to NW Yunnan, China where it occurs on cliffs and rocky slopes from 10,000 to 12,000 ft.

 

1970/310  F#26478:Nymans   (+5\R2\5).   Tubular bell-shaped scarlet to crimson flowers in mid-spring.  The leaves are covered with a white woolly indumentum on the undersides.  Good drainage essential.  Rarely offered collector’s item.

 

1995/087  Glendoick  (+5\R2\5).  Long narrow leaves with a white woolly indumentum beneath.  Bright and waxy bell-shaped crimson flowers in mid-spring.  Requires excellent drainage.

 

1996/022  CNW#564:Millais  (+5\R2\5).  A species that should be grown more often for its bright flowers in shades of red.