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Hilda Niblett Azalea

Rhododendron 'Hilda Niblett'

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Hilda Niblett Azalea (Rhododendron 'Hilda Niblett') at Valley View Farms

Hilda Niblett Azalea flowers

Hilda Niblett Azalea flowers

(Photo courtesy of NetPS Plant Finder)

Hilda Niblett Azalea (Rhododendron 'Hilda Niblett') at Valley View Farms

Hilda Niblett Azalea in bloom

Hilda Niblett Azalea in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  12 inches

Spread:  4 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  5b

Group/Class:  Robinhill Azaleas


A beautiful, unique variety with a very low spreading habit; elegant rose-pink and white blooms in spring and early summer; great for edging; absolutely must have well-drained, highly acidic and organic soil, use plenty of peat moss when planting

Ornamental Features

Hilda Niblett Azalea is covered in stunning clusters of rose trumpet-shaped flowers with white overtones and cherry red spots at the ends of the branches from mid spring to early summer. It has green foliage. The glossy narrow leaves remain green throughout the winter. The fruit is not ornamentally significant.

Landscape Attributes

Hilda Niblett Azalea is a dense multi-stemmed evergreen shrub with a ground-hugging habit of growth. Its relatively fine texture sets it apart from other landscape plants with less refined 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.

Hilda Niblett Azalea is recommended for the following landscape applications;

  • Mass Planting
  • Border Edging
  • General Garden Use
  • Container Planting

Planting & Growing

Hilda Niblett Azalea will grow to be about 12 inches 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 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.

Hilda Niblett Azalea makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Because of its spreading habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. 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
Massing  Edging  Garden  Container 
Flowers  Winter Value 
Ornamental Features
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