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Greenball Japanese Hemlock

Tsuga diversifolia 'Greenball'

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Greenball Japanese Hemlock (Tsuga diversifolia 'Greenball') at A Very Successful Garden Center

Greenball Japanese Hemlock

Greenball Japanese Hemlock

(Photo courtesy of NetPS Plant Finder)

Height:  4 feet

Spread:  4 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a

Other Names:  Green Ball Northern Japanese Hemlock

Description:

This dwarf cultivar is compact, round and dense when young, then develops a more irregular habit when mature; very short needles gives this variety a fine texture; likes sunshine and acidic moist soil

Ornamental Features

Greenball Japanese Hemlock is a dwarf conifer which is primarily valued in the landscape or garden for its ornamental globe-shaped form. It has dark green evergreen foliage which emerges light green in spring. The small needles remain dark green throughout the winter.

Landscape Attributes

Greenball Japanese Hemlock is a multi-stemmed evergreen shrub with a more or less rounded form. It lends an extremely fine and delicate texture to the landscape composition which can make it a great accent feature on this basis alone.

This shrub will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Insects

Greenball Japanese Hemlock is recommended for the following landscape applications;

  • Mass Planting
  • Hedges/Screening
  • Rock/Alpine Gardens
  • General Garden Use
  • Container Planting

Planting & Growing

Greenball Japanese Hemlock will grow to be about 4 feet tall at maturity, with a spread of 4 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 30 years.

This shrub does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type, but has a definite preference for acidic soils. It is quite intolerant of urban pollution, therefore inner city or urban streetside plantings are best avoided, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America.

Greenball Japanese Hemlock makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Because of its height, it is often used as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Massing  Screening  Rock  Garden  Container 
Applications
Texture  Plant Form  Winter Value 
Ornamental Features