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Knaptonensis Japanese Cedar
Knaptonensis Japanese Cedar foliage
Knaptonensis Japanese Cedar
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Cryptomeria japonica / Knaptonensis Japanese Cedar

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Height:  3 feet

Spread:  3 feet

Sunlight:  partial shade  full shade 

Hardiness Zone:  5b

Description:

A compact conical shrub in the Cypress family, with stunning foliage that emerges white and slowly ages to a gray-green; a perfect garden or landscape accent shrub that is sure to draw attention; displays some bronzing in winter

Ornamental Features

Knaptonensis Japanese Cedar has attractive grayish green foliage which emerges white in spring. The scale-like leaves are highly ornamental and remain grayish green throughout the winter. Neither the flowers nor the fruit are ornamentally significant.

Landscape Attributes

Knaptonensis Japanese Cedar is a multi-stemmed evergreen shrub with a distinctive and refined pyramidal form. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.

This is a relatively low maintenance shrub, and should not require much pruning, except when necessary, such as to remove dieback. It has no significant negative characteristics.

Knaptonensis Japanese Cedar is recommended for the following landscape applications;

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

Planting & Growing

Knaptonensis Japanese Cedar will grow to be about 3 feet tall at maturity, with a spread of 3 feet. It has a low canopy with a typical clearance of 1 foot from the ground. It grows at a slow rate, and under ideal conditions can be expected to live for 40 years or more.

This shrub does best in partial shade to shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is particular about its soil conditions, with a strong preference for rich, acidic soils, and is able to handle environmental salt. 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.

Knaptonensis Japanese Cedar makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. With its upright habit of growth, it is best suited for use 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. 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  Rock  Garden  Container 
Applications
Foliage Color  Texture  Plant Form  Winter Value 
Ornamental Features