Rhododendron orthocladum


Botanical Information

FamilyEricaceae
GenusRhododendron
Speciesorthocladum
CategoryWoody
TypeShrub (evergreen)
OriginNative to western China (northern Yunnan, southwestern Sichuan). The genus name comes from the Greek word, 'rhodos' meaning rose and 'dendron', which means tree.

Details

USDA Hardiness Zone6
USDA Hardiness Ref.
Canadian Hardiness ZoneH6 - H7
Canada Hardiness Ref.
RHS Hardiness Zone5a - 6a
RHS Hardiness Ref.
Temperature (°C)-23 - (-18)
Temperature (°F)-10 - 0
HeightUp to 1.3 m
Spread1.5 m
GrowthSlow
Flowering PeriodApril, May

Description and Growing Information

General DescriptionRhododendron orthocladum is an erect evergreen shrub with many branches whose tips bear small, yellow-green leaves.
CultivationGrow in moist, well-drained, loose, acidic, humusy soil.
Notable SpecimensRHS Garden Rosemoor, North Devon, England.
Leaf DescriptionNarrowly elliptic to lanceolate, 8 - 16 mm, yellow-brown to fawn underneath, crowded at the ends of branches in false whorls.
Flower DescriptionPetals are funnel-shaped, lavender-blue to purple or white.

Photographs