Cornus ('KN30-8') 'VENUS®'

Cornus ('KN30-8')
Cornus ('KN30-8') 'VENUS®'
Venus® dogwood
SIZE/TYPE taller shrub
USUAL HEIGHT 2-4m
USUAL WIDTH 3-5m
LEAVES deciduous broadleaf
COLOUR OF LEAVES green
FLOWERS showy
COLOUR OF FLOWERS white
BLOOMING TIME June - June
LOCATION full sun
SOIL TYPE acidic (peaty)
SOIL MOISTURE REQUIREMENTS evenly moist (dislikes drought)
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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This dogwood comes from an interspecific hybridization of Japanese dogwood and cornus nuttallii. Dr. Elwin R.Orton from the Rutgers University of New Jersey, USA was the man behind this work that began in 1983 and 20 years later he was able to have his superb plant patented under patent number PP16309. The aim was to bring a plant with superior winter hardiness as well has resistance against the so-called dogwood decline in the USA caused by the anthracnose epidemic in the last decades of 20th century and powdery mildew.

Venus® is a trade name for this lovely plant. It is truly much nicer than the original variety name “KN30-8”. It is as mathematical as the breeding equation: (cornus kousa „Chinensis“ x cornus nuttalli „Goldspot“ ) x cornus kousa „Rosea“. The result being extremely large bracts composed around a flower head (we call this a flower, to keep it simple). The flowers are pure to cream white, 15 to 18 cm across and open up in late May or rather early June. They persist for 2-3 weeks, weather conditions pending. Quantity and size of flowers vary from year to year.

Pointed leaves are deciduous, ovate, dark green and do not curl or droop as much as their parents´ leaves. In autumn they change to bright orange-red.

This dogwood grows a little faster than its parents, and gets rather wide than tall. Pruning is not needed. But if you want to shape it or reduce its size do so as soon as possible after flowering so it can set buds for the following year. It is resistant to diseases and borers.

Venus® dogwood will look its best when planted as a free-standing specimen. Its numerous, divine flowers will then have the undivided attention in late spring and you will be able to enjoy the structure of a densely leaved plant until autumn. If however your aim is to have it in a group, consider the companions carefully. We suggest combining it with compact or dwarf, or even ground-covering varieties only, so that each plant has its attention. Yakushimanum rhododendrons, dwarf conifers, and/or evergreen groundcovers could do the job.

Every dogwood likes acidic soil, rich in organic material, and always moist. Some gardeners advise planting it in semi-shade to reduce summer sunlight but we do not recommend that. Plant it in full sun and mulch the roots well. In dry spells provide extra watering and thus you can be sure your dogwood will flower profusely and will be richer and healthier. Though Venus® is more drought tolerant than other dogwood species. Use of selective fertilizers supporting flowering and leaf colour is advised. Fully hardy to about -29°C (USDA zone 5).

Last update 18-12-2007
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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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