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Stewartstonian Azalea

Rhododendron 'Stewartstonian'

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Stewartstonian Azalea (Rhododendron 'Stewartstonian') at Platt Hill Nursery

Stewartstonian Azalea in bloom

Stewartstonian Azalea in bloom

(Photo courtesy of NetPS Plant Finder)

Stewartstonian Azalea (Rhododendron 'Stewartstonian') at Platt Hill Nursery

Stewartstonian Azalea flowers

Stewartstonian Azalea flowers

(Photo courtesy of NetPS Plant Finder)

Height:  4 feet

Spread:  4 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  5b

Group/Class:  Gable Hybrids

Description:

A dazzling variety covered in smallish yet abundant hot red flowers in spring over glossy dark green semi-evergreen foliage; absolutely must have well-drained, highly acidic and organic soil, use plenty of peat moss when planting

Ornamental Features

Stewartstonian Azalea is blanketed in stunning clusters of lightly-scented tomato-orange trumpet-shaped flowers at the ends of the branches in mid spring before the leaves. It has dark green foliage throughout the season. The glossy narrow leaves do not develop any appreciable fall color. The fruit is not ornamentally significant.

Landscape Attributes

Stewartstonian Azalea is an open multi-stemmed deciduous shrub with a more or less rounded form. 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.

Stewartstonian Azalea is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • General Garden Use

Planting & Growing

Stewartstonian Azalea will grow to be about 4 feet tall at maturity, with a spread of 4 feet. It tends to be a little leggy, 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 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 microclimates. 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

This Plant Finder tool is an online catalog representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact your nearest Platt Hill Nursery store for current availability. It does not include our entire inventory of plants, so be sure to visit us to see varieties that may not be represented on this list.