Rhododendron keiskei
Common name: 
Keiskei Rhododendron
Keisuki Rhododendron
rho-do-DEN-dron KAY-skee-ee
Native to (or naturalized in) Oregon: 
  • Broadleaf evergreen shrub, 2 ft (0.6 m) tall in 10 years, to 6 ft (1.85 m), low growing, compact, occasionally leggy and open.  Leaves lanceolate to narrowly elliptic, 4-6 cm long, 2-3 cm wide, tip pointed, base tapered or rounded, more or less scaly on both surfaces, but especially below, bronze-brown when young; petiole about 6 mm long.  Flowers pale, dull yellow, broadly bell-shaped, 3-5 cm wide, 10 stamens, 2-6 flowers per cluster; flower stalk scaly, 1.3-2.0 cm long.
  • 0°F, early-mid; quality rating: 4/3-4/4 [flower / plant & foliage / performance; scale 1 (poor) - 5 (best)].   Sun.
  • Native to Japan (widely distributed, Honshu to Yakushima).  The American Rhododendron Society's taxonomic tree lists two varieties of this species, the flowers of both are similar, but:
    • var. keiskei  -  is a medium sized shrub that is often leggy (0.6 m in 10 years), only hardy to 0° F, and leaves 3-7.5 cm long, whereas
    • var. ozawae  -   is a very dwarf, prostrate shrub (0.3 m in 10 years), hardy to -10° F, and leaves shorter, 1.5-2.5 cm long.   The selection 'Yaku Fairy' is a slow-growing, prostrate form that is native to Kuromi Peak on island of Yaku.
  • keiskei: after Ito Keisuke, 1803-1900, a Japanese botanist.
  • li>Rhododendron Species Foundation and Botanical Garden, Federal Way, Washington.
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  • plant habit, flowering

    plant habit, flowering

  • flowers and leaves

    flowers and leaves

  • flower