Shrub

Polar Night Rhododendron

Rhododendron 'Polar Night'

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Polar Night Rhododendron (Rhododendron 'Polar Night') at Squak Mountain Nursery

Rhododendron 'Polar Night' flowers

Rhododendron 'Polar Night' flowers

(Photo courtesy of NetPS Plant Finder)

Height: 3 feet

Spread: 5 feet

Sunlight:  full sun  partial shade 

Hardiness Zone: 5

Other Names: Polarnacht Rhododendron

Description:

An unusual and stunning variety with deep dark purple blooms emerging from near black buds; a very warm and elegant accent plant; absolutely must have well-drained, highly acidic and organic soil, use plenty of peat moss when planting

Ornamental Features:

Polar Night Rhododendron is covered in stunning clusters of deep purple trumpet-shaped flowers at the ends of the branches in late spring, which emerge from distinctive black flower buds. It has dark green foliage. The glossy narrow leaves remain dark green through the winter. The fruit is not ornamentally significant.

Landscape Attributes:

Polar Night Rhododendron is an open multi-stemmed evergreen shrub with an upright spreading habit of growth. Its relatively coarse texture can be used to stand it apart from other landscape plants with finer foliage.

This is a relatively low maintenance shrub, and should only be pruned after flowering to avoid removing any of the current season's flowers. It has no significant negative characteristics.

Polar Night Rhododendron is recommended for the following landscape applications;

  • General Garden Use
  • Mass Planting
  • Accent

Plant Characteristics:

Polar Night Rhododendron will grow to be about 3 feet tall at maturity, with a spread of 5 feet. It tends to be a little leggy, with a typical clearance of 1 feet 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 full sun to partial shade. It requires an evenly moist well-drained soil for optimal growth, but will die in standing water. It is very fussy about its soil conditions and must have rich, acidic soils to ensure success, and is subject to chlorosis (yellowing) of the leaves in alkaline soils. It is somewhat tolerant of urban pollution, 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 zones.

This particular variety is an interspecific hybrid.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Accent Massing Garden
Applications
Flowers Winter Value
Ornamental Features