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Grand Duke Gardenia

Gardenia jasminoides 'Grand Duke'

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Grand Duke Gardenia (Gardenia jasminoides 'Grand Duke') at A Very Successful Garden Center

Grand Duke Gardenia flowers

Grand Duke Gardenia flowers

(Photo courtesy of NetPS Plant Finder)

Height:  5 feet

Spread:  5 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  9b

Other Names:  Jasminum sambac Grand Duke of Tuscany

Description:

The creamy white, fully double blooms of this variety are more akin to that of a small peony bloom, contrasting the large deep green foliage; great as a container planting

Ornamental Features

Grand Duke Gardenia features showy fragrant white ball-shaped flowers at the ends of the branches from late spring to early summer. The flowers are excellent for cutting. It has dark green evergreen foliage. The glossy oval leaves remain dark green throughout the winter.

Landscape Attributes

Grand Duke Gardenia is a dense multi-stemmed evergreen shrub with an upright spreading habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.

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 is a good choice for attracting bees and butterflies to your yard. It has no significant negative characteristics.

Grand Duke Gardenia is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • General Garden Use
  • Container Planting

Planting & Growing

Grand Duke Gardenia will grow to be about 5 feet tall at maturity, with a spread of 5 feet. It has a low canopy, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 30 years.

This shrub does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. 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.

Grand Duke Gardenia 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. It is even sizeable enough that it can be grown alone in a suitable container. 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
Characteristics
Accent  Massing  Garden  Container 
Applications
Flowers  Attracts Wildlife 
Ornamental Features