Acer pseudosieboldianum

Acer pseudosieboldianum
Acer pseudosieboldianum 
Korean maple
SIZE/TYPE taller shrub
USUAL HEIGHT 3-6m
USUAL WIDTH 3-4m
LEAVES deciduous broadleaf
COLOUR OF LEAVES green
FLOWERS insignificant or non-blooming
COLOUR OF FLOWERS
BLOOMING TIME
LOCATION full sun
USDA zone (lowest) 4   (down to -34°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
Rarities
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Korean maple is a less common species in European cultivation, and as the name suggests its native habitat are the forests of Korea and North China. It is a sought-after plant among those who love Japanese maples but for some reason don’t succeed in growing them. Korean maple is a very similar looking large shrub or tree which is not prone to typical Japanese maples diseases and will grow in almost any soil without any maintenance.

Its deciduous leaves are 10-12 cm long, palmate, 9-11 lobed, yellow-green in spring with pale scarlet hues, light to rich green in summer, and brilliant red in autumn with some golden yellow and orange tones. In spring emerge numerous small purple red flowers followed by small winged fruit (samaras).

It grows medium fast to fast (30-50 cm per year) especially when young, initially forming an upright shrub or multi-stemmed tree, slowing down with age, opening its canopy into a broad vase shape. It can be trimmed to shapes or pruned to be kept smaller, best of which is done from late autumn to mid winter during frost-free periods in order to prevent from bleeding sap.

Korean maple loves full sun and will tolerate a little bit of partial shade. It does not require acid soil like Japanese maples but will produce better and deeper colours of autumn foliage in grown in acid soil. It should be fertile and evenly moist all year round so mulching is recommended. It dislikes drought and compacted ground. Extremely hardy to min. -34°C (USDA zone 4).

Last update 12-03-2017
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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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