Capistrano Rhododendron

  • Posted on: 20 June 2015
  • By: Brent
Plant Type: 
Rhododendron

A sunny variety with gentle white and lemon yellow blooms that cover the branches in mid spring; an attractive accent plant; absolutely must have well-drained, highly acidic and organic soil, use plenty of peat moss when planting

Ornamental Features:
Capistrano Rhododendron is covered in stunning clusters of lightly-scented creamy white trumpet-shaped flowers with lemon yellow throats and tan spots at the ends of the branches in mid spring. It has dark green foliage. The glossy narrow leaves remain dark green through the winter. The fruit is not ornamentally significant. The smooth gray bark is not particularly outstanding.

Landscape Attributes:
Capistrano 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.

Capistrano Rhododendron is recommended for the following landscape applications;

  • General Garden Use
  • Mass Planting
  • Accent

Plant Characteristics:
Capistrano Rhododendron will grow to be about 5 feet tall at maturity, with a spread of 6 feet. It tends to be a little leggy, with a typical clearance of 1 feet from the ground, and is suitable for planting under power lines. 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.