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NEW LIME TOLERANT INKARHO RHODODENDRONS - This year we are offering just a few varieties as a trial to test their popularity with our customers.
Scented Rhododendrons suitable for conservatory or cool greenhouse are marked with an asterisk.
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".
Pests & Diseases - vine weevils, scale insects, honey fungus, powdery mildew, bud blast.
Place of Origin - garden origin. UK. 1867. J. Waterer, Knaphill, Surrey.
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)
Height - 3m (10ft)
Spread - 3m (10ft)
Evergreen - medium-sized leaves 5-15cm (2-6in) long.
Tall Shrub - free-flowering shrub. Produces high-domed trusses of funnel-shaped flowers 7-9cm (3-3½in) long.
Full Sun - prefers full sun. Shelter from strong winds
Fertile moist well-drained soil - humus-rich
Neutral to acid soil - ideally pH4.5 - 5.5
Flower Colour - White - mauve buds open to white flowers with a purple blotch
- Dead Heading
- Dead Heading - Video Tip ondemand_video
- Pruning - Video Tip ondemand_video
- Weed Killing
- Pests and Diseases
- Honey Fungus - Video Tip ondemand_video
- Further Reading
- Growing from seed
- Growing from cuttings
- Propagation by layering - Video Tip ondemand_video
- Propagation by other means
- Making a hybrid - Video Tip ondemand_video
- Making a hairy or scaly cross - Video Tip ondemand_video
- Caerhays bred 'Red Centurian'