The history of the introduction of the Rhododendron family to the western world reads somewhat like the script of an Indiana Jones movie. Devoted horticultural pioneers of the 19th century risked life and limb in the remote mountainous regions of China to seek out desirable species. The British Empire had an endless apetite for Rhododendrons which had to be satisfied! This was no simple Chinese Takeaway. Marauding tribesmen and man-hunting dogs along with pests and diseases were a very real and dangerous threat. We can be grateful that through them we now know of aproximately 900 species of Rhododendron which have been inter-bred to create more than 10,000 hybrids. There is really no excuse for not finding a Rhododendron that apeals.
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Rhododendrons do need consideration as to planting position. They prefer rich deep soil that has an acid ph. Basically this excludes heavy clay or chalky soils. Soil condition can be improved with the addition of peat or bark mulch. Avoid lime. Rhododendrons prefer a little dapled light in the afternoon but can be surprisingly tolerant of sun as long as their roots are kept cool with a nice layer of mulch or compost. The root system is fibrous which means lots of little roots all massed together and near the surface. The good thing about fibrous root systems is it means the plants are easy to move should you wish to give them a ride in your wheelbarrow - something I do far too much of! What else do you need to know? Unfortunately here in New Zealand Rhododendrons are susceptible to damage from a nasty little insect called Thrip. This eats through the top green layer of the leaf leaving it with a silver apearance, when it's done it then goes and hides beneath the leaf. Thrips can easily be controlled by spraying regularly with a systemic chemical insecticide which penetrates through the plant, poisoning the insect when it attacks the foliage. If you prefer a more gentle method of destruction then use an organic surfactant spray i.e. it doesn't penetrate the plant tissue, but you will have to make sure that you spray underneath the leaf as well as on the top. Some Rhododendrons can start flowering from winter onwards in warmer areas of N.Z. but the main flowering period is considered to be spring. In full flower they add a dramatic beauty to the garden and are particularly superb under tall deciduous trees. If you really want to see Rhododendrons at their best I highly recommend a trip to the New Plymouth Rhododendron festival in October/November of each year. You can then get an idea of the type of Rhododendron that suits you and your garden and here at Wairere we'll do our best to match your desires. All plants called Rhododendrons in New Zealand are evergreen and fully hardy to cold. Azaleas are also classified as Rhododendrons and some of these are deciduous - for further information see our separate category.
The foliage is beautiful with rounded green leaves with orange red flower buds. The flower has a larger colourful calyx on the back of the flower which gives the flower a double appearance. Wonderful orange yellow colour delights the eye. Great growth habit making an attractive plant all year long. Evergreen
Very showy, large, well formed trusses of pastel mauve-pink will delight in mid spring. A strong vigorous grower with a tidy habit. Plant in a semi-shaded spot with acid soil and mulch annually to keep the roots cool. Evergreen.
Colour: Pink / Mauve Habit: Upright Est. Hgt/Wdth in 7/10 yrs: 1.5m x 1m
In spring, compact trusses of pink flowers open from deep apricot buds. The flowers mature to salmon-yellow with a crimson blotch. Long pointed evergreen foliage. Good strong healthy growth and a compact habit. Happiest in semi-shade with acid soil.
Colour: Pink / Yellow Habit: Upright Est. Hgt/Wdth in 7/10 yrs: 1.5m x 1m
Handsome dark green foliage, a broad rounded habit and ravishing red blooms in spring. The flowers present themselves in large domed trusses. Sensational.
Will tolerate some sun but best in dappled light with acid soil. Evergreen.
Colour: Red Habit: Upright Est. Hgt/Wdth in 7/10 yrs: 1.8m x 1.5m
An absolutely stunning Rhododendron with large, long green leaves topped off with huge trusses of satin pink flowers with a white under-tone. Magnificent in full bloom. Plant in a semi-shaded position in acid soil, mulch regularly to keep the roots cool. Evergreen.
As a point of interest there are many in the Rhododendron world consider this to be the same as 'Lems Monarch' - whatever the name it is still a beautiful and stunning Rhododendron.
Colour: Pink / White Habit: Upright Est. Hgt/Wdth in 7/10 yrs: 1.8m x 2m
Rich pink buds appear in spring and open to beautiful large trusses of blush white blooms that have a hint of green in the centre. Handsome glossy green foliage and a vigorous upright habit. Plant in semi-shade in acid soil for best results. Evergreen.
Colour: White / Pink Habit: Upright Est. Hgt/Wdth in 7/10 yrs: 3m x 2m
Unusual soft apricot-orange blooms that are attractively blotched with a deeper tone of the same shade. Each bloom is edged in red. Would look great in a terracotta pot or equally at home in a semi-shaded part of the garden. Mulch the roots regularly to keep cool. Evergreen.
Colour: Orange / Red Habit: Compact Est. Hgt/Wdth in 7/10 yrs: .9m x .9m
Scintillating large blooms of deep burgundy-red are set against long flat leaves of deep green. Blooms late spring. Plant in a semi-shaded spot in acid soil for best results. Mulch annually to keep the roots cool. Evergreen.
Colour: Red / Red Habit: Upright Est. Hgt/Wdth in 7/10 yrs: 2m x 1.5m
Attractive reddish flower buds followed by beautiful rosy-cerise flowers which are bright and glowing. Very free flowering in spring. Compact habit with attractive, small pointed foliage that has coppery tones when young. Prefers semi-shade and acid soil. Evergreen.
Colour: Red / Pink Habit: Compact Est. Hgt/Wdth in 7/10 yrs: 1m x 1m
A charming little Rhododendron that is slow growing and compact in habit. The rose pink buds open to a softer shade of pink and fade to white as they mature. Long oval leaves that curve inwards with a soft 'felt' underside. From the Japanese Island of Yakushima. Evergreen.
Colour: Pink / White Habit: Compact Est. Hgt/Wdth in 7/10 yrs: 60cm x 45cm