Woody > Rhododendron > Rhododendron arboreum > Rhododendron arboreum var. campbelliae

Family

Ericaceae

Genus

Rhododendron

Species

arboreum

Category

Woody

Type

Tree (evergreen)

Variety

campbelliae

USDA Hardiness Zone

7 - 9

Canadian Hardiness Zone

7b - 8b

RHS Hardiness Zone

H4 - H5

Temperature (°C)

-17.8-(-6.7)

Temperature (°F)

0-20

Height

8-12 m

Spread

2-4 m

Photographs

Description and Growing Information

Flowering Period

General Description

In 1993 this tree was discovered on Mount Japfu in India. The tree holds the Guinness Record for the tallest Rhododendron at 32 metres. It was measured at the time of discovery but is still growing.

Landscape

Propagated by seed.

Cultivation

Grows best in well drained, moist soils and partial sun.

Shape

Bushy.

Growth

Slow

Pests

Vine weevils, white fly, scale insects, caterpillars, aphids and honey fungus. Powdery mildew may be a problem in areas of poor air circulation.

Habitat

Horticultural origin.

Leaf Description

The broad, dark green leaves are 10-20 cm long. The underside of the leaves are silvery.

Flower Description

In the spring 15-20 bell-shaped flowers grow, reaching 5-6 cm long and 5 cm wide. They are dark pink to ruby red.

Notable Specimens

Trebah Gardens, Mawnan Smith, Nr Falmouth, Cornwall.

Propagation

Propagated by seed.

top