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Brigadoon St. John's Wort

Hypericum calycinum 'Brigadoon'

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Brigadoon St. John's Wort (Hypericum calycinum 'Brigadoon') at Valley View Farms

Brigadoon St. John's Wort

Brigadoon St. John's Wort

(Photo courtesy of NetPS Plant Finder)

Height:  16 inches

Spread:  24 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  4b

Other Names:  Aaron's Beard

Description:

A beautiful variety with chartreuse new foliage that matures to yellow with orange highlights in full sun; subtle yellow flowers in summer; makes a fantastic addition to the color garden; widely adaptable but thrives best in moist, well-drained soil

Ornamental Features

Brigadoon St. John's Wort's attractive oval leaves emerge chartreuse in spring, turning yellow in color with showy orange variegation throughout the season. It has masses of beautiful yellow buttercup flowers at the ends of the stems from early summer to mid fall, which are most effective when planted in groupings. The flowers are excellent for cutting. The fruit is not ornamentally significant.

Landscape Attributes

Brigadoon St. John's Wort is a dense herbaceous perennial with an upright spreading habit of growth. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This plant will require occasional maintenance and upkeep, and should only be pruned after flowering to avoid removing any of the current season's flowers. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. It has no significant negative characteristics.

Brigadoon St. John's Wort is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Groundcover
  • Container Planting

Planting & Growing

Brigadoon St. John's Wort will grow to be about 16 inches tall at maturity, with a spread of 24 inches. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years.

This plant does best in full sun to partial shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. 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. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Brigadoon St. John's Wort is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a mass of flowers and foliage against which the larger thriller plants stand out. 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
Massing  Garden  Groundcover  Container 
Applications
Flowers  Foliage Color 
Ornamental Features
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