Koelreuteria paniculata 'CORAL SUN'®

Koelreuteria paniculata
Koelreuteria paniculata 'CORAL SUN'®
golden-rain tree
SIZE/TYPE taller shrub
USUAL HEIGHT 3-7m
USUAL WIDTH 2-5m
LEAVES deciduous broadleaf
COLOUR OF LEAVES ++multicoloured:light green a salmon pink a golden
FLOWERS insignificant or non-blooming
COLOUR OF FLOWERS
BLOOMING TIME
LOCATION full sun
USDA zone (lowest) 5   (down to -29°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 Deciduous broadleaf
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Coral Sun® is a fascinating new variety of golden-rain tree. It was found by Henny Kolster as a natural mutation among many seedlings in his Dutch nursery in Boskoop in 1993. For three years he had been grafting it onto the koelreuteria paniculata species rootstock and all new plants proved to be identical to the new seedling. A patent that guarantees protection of this plant and describes the invention was released in 2007 in the USA under PP17,409. It is also protected in Europe under Plant Breeders Rights EU 19811.

Coral Sun® is most attractive during spring months when new leaves emerge. They are finely cut, coloured salmon-pink at first, changing to golden orange and almost pure yellow before they turn light, soft green in summer. All this show is accompanied by distinctive, vivid red petioles that keep their colour until autumn. Then the leaves turn deep yellow while insolated leaves are fiery orange or salmon pink while the trunk and branches remains orange with red tints.

Golden-rain tree is famous for its summer flowering, and this variety first bloomed here in August 2012. It produced typical panicles of pure yellow flowers on the background of light green foliage combined with red petioles.

It grows medium fast making a rounded crown with age. Coral Sun® is often grown as a shrub and pruned hard to achieve the longest new shoots that have all the great colour features described above. Just wait with pruning until spring when the frost is gone but do so before the buds begin to swell. Golden-rain tree emerges later than many other trees.

It is widely soil adaptable. The soil should be well-drained and medium fertile for natural growing. If pruned hard every spring apply some balanced fertilizer to encourage strong new growth. Grow it in full sun, it needs warmth to set flowers should it ever flower. Plants older than 3 years are hardy to about -29°C (USDA zone 5).

Last update 19-01-2010; 23-10-2010; 29-08-2012
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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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