Viburnum opulus (syn. 'Sterile') 'ROSEUM'

Viburnum opulus (syn. 'Sterile') 'ROSEUM'
snowball tree

SIZE/TYPE	medium-sized shrub
USUAL HEIGHT	2-4m
USUAL WIDTH	2-4m
LEAVES	deciduous broadleaf
COLOUR OF LEAVES	green
FLOWERS	showy
COLOUR OF FLOWERS	white
BLOOMING TIME	May - May
LOCATION	full to partial sun
USDA zone (lowest)	4 (down to -34°C)
WINTER PROTECTION
FOR ZONE 5+6
FOR ZONE 7
BELONGS TO CATEGORIES	Deciduous broadleaf Hedging plants

Snowball tree is a popular deciduous shrub flowering in May. It bears profusion of pure white, spherical inflorescence that might resemble hydrangea flowers from a distance. They are sterile i.e. no fruits are produced. The branches often weep under their weight. The leaves are palmate, three-lobed, 5-8 cm wide, mid green and partly glossy, changing to bright and deep red shades in autumn.

It forms a rounded shrub usually about 3m tall and wide and can be pruned or shaped in any way. The best time to cut it is after flowering (i.e. in June): either trim current year’s growth to achieve a desired shape, or cut it back to about 30 cm above soil level for rejuvenating.

Viburnums are not specific about soil needs. It should be well-drained, medium fertile and kept moist for a few months after planting. Grow it in full sun or partial shade. Hardy to about -34°C (USDA zone 4).

Last update 12-01-2011; 14-10-2019; 29-08-2021

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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.