Rhododendron cinnabarinum 'WASGAU'

Rhododendron cinnabarinum
Rhododendron cinnabarinum 'WASGAU'
red cinnabar rhododendron
SIZE/TYPE medium-sized shrub
USUAL HEIGHT 0.8-1.3m
USUAL WIDTH 0.8-1.3m
LEAVES evergreen broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS ++různobarevné:yellow a orange a salmon pink
BLOOMING TIME April - May
LOCATION full to partial sun
USDA zone (lowest) 6b   (down to -21°C)
WINTER PROTECTION  
FOR ZONE 5+6 Code of winter protection zone 5+6
FOR ZONE 7 Code of winter protection zone 7
BELONGS TO CATEGORIES Rhododendrons, azaleas, and mountain laurels
Evergreen broadleaf
Rarities
náhled fotonáhled fotonáhled foto
Red cinnabar rhododendron is a unique species found around Himalayas in Nepal, Bhutan, Tibet, to southeast China. Its flowers are campanulate and the leaves smell by camphor and cinnamon. Nectar of its flowers is supposedly the most poisonous of all rhododendrons. Hardiness of its subspecies is still under trials and thanks to its home regions where temperatures may drop dramatically during one day it is expected to live well in milder parts of northern hemisphere.

Wasgau is a fascinating variety of red cinnabar rhododendron. It was bred by Karl Heger in 1984 as a cross between (r.ambiguum x r.cinnabarinum ssp. xanthocodon) x r.cinnabarinum ssp. xanthocodon. Its flowers are shaped into slim trumpets, and are pure yellow when they emerge, changing to golden orange at its peak, and gaining cinnabar red when they fade. This truly fantastic play of colours is magnified by the fact that they open very early when buds of most other rhododendrons only begin to swell. Evergreen leaves are small, leathery, elliptic, deep green and glossy, and fragrant when crushed. It grows moderately forming a mid-sized shrub of about a meter tall and wide. In full sun or only partial shade it will produce more flowers of richer colour and grow into a dense habit.

Rhododendron roots are shallow, spreading to sides in search for nutrients. Never plant them too deep. The soil has to be acidic (pH 4.5-5.5), rich in humus, cool and always moist. Ideal soil mixture is peat with lime-free, light garden soil topped with leave-mould. Fully hardy to abt. -30°C (USDA zone 5).

Last update 03-05-2015
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GLOSSARY
  • STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
  • DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
  • EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
  • STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
  • HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
  • SHRUB - a woody plant with branches growing bushy from the ground level.
  • HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
  • FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
  • GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
LARGE PLANTS over 150 cmspecimens, screening and hedging shrubs

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