RHODODENDRON

Scented Rhododendrons suitable for conservatory or cool greenhouse are marked with an asterisk.

Syn. Azalea.

Genus of more than 1000 species of evergreen and deciduous trees and shrubs from Europe, Asia, Australasia and North America, particularly southwestern China, Tibet, Burma, northern India and New Guinea.

Evergreen rhododendrons vary greatly in size and usually have bell-shaped flowers with 10 stamens.

Azaleas have smaller, thinner leaves and are generally medium-sized shrubs with smaller, funnel-shaped flowers with, usually, 5 stamens.

The problem rhododendron, vigorous hybrids of R. ponticum, which is colonizing large areas has been given the name R x superponticum and is subject to EU legislation under the "Invasive Alien Species Regulation".

Garden location should have suitably acidic soil.

Full Plant Details - Sun/Soil & other attributes

Burncoose speciality
See Burncoose Speciality group for more details
Good to know
'Whisky'. R. 'Diane' x R. viscidifolium. Shallow planting is essential
Pests & Diseases
Vine weevil, scale insects, honey fungus, powdery mildew, bud blast
Place of origin
Garden origin. Germany. c1950. DG Hobbie
Rhododendrons
Rhododendron
Evergreen
Glossy, deep green leaves
Orange
Coppery orange fading to yellow
Bell/Lantern
Bell-shaped
Fully hardy
Entire
Orbicular
Ovate
Height
1.5m (5ft)
Spread
1.5m (5ft)
Medium shrub
Typically grow to around 4-6 feet in height

Small shrub of open habit
Pruning group 5
Suitable for: Evergreen shrubs that require minimal pruning.
Action: Trim or lightly cut back shoots that spoil symmetry. Deadhead regularly.
When: Annually after flowering.
Hardy - cold winter
Hardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
Spring Seasonal Interest
Acid / ericaceous loving
Ideally pH 4.5-6.0
Fertile moist well-drained soil
Humus-rich
Neutral to acid soil
Full sun
Partial shade
harmful if eaten
People and pets, i.e. cats, dogs, rabbits, rodents, tortoises
Rabbit Resistant

Mature Size

1.5m (5ft)
	1.5m (5ft)

View Planting Tips and Care Advice

Rhododendron - Care Guide

Rhododendron - Propagation

Rhododendron - Video Spotlights

More Care Guides & Tips

Search Caerhays Garden Diary for more info & pictures

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Available late spring to early summer 2026
Spring according to the Met Office is defined as March 1st - May 31st. Therefore late spring is mid-April onwards. This is not a guaranteed date but an estimate and subject to availability.