Rhododendron arboreum subsp. cinnamomeum
rho-do-DEN-dron ar-BO-ree-um sin-a-MO-me-um
Native to (or naturalized in) Oregon:
- Broadleaf evergreen shrub or tree, to 10-25 ft (~3-8 m) high, may grow to 5 ft ( 1.5 m) tall in 10 years. Leaves oblong-lanceolate or lanceolate, 8-15 cm long and 2-5 cm wide, apex acute or obtuse, base obtuse or rounded, upper surface dark or olive green, deeply impressed veins, under surface has a thin wooly, often loosely wooly, cinnamon indumentum, mid-rib prominent. Flowers typically white with purple spots, but can be pink or crimson, 2.5-4 cm long, 5 lobed, 10 stamens, unequal length.
- 5°F, early, 3/5/3 [quality rating of flower / foliage & plant / performance, based on a 1(poorest) to 5 (best) scale].
- Native to the Himalayas: Nepal, Bhutan, India, and southern Tibet) .
- cinnamomeum: cinnamon-colored, a reference to the indumentum on the lower side of leaves.
- Federal Way, Washington: Rhododendron Species and Botanical Garden.