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Plant Guide


422 Bath Road
Brunswick, ME 04011


89 Foreside Road
Falmouth, ME 04105


201 Gray Rd (Route 100)
Cumberland, ME 04021


Blues Festival® St. John's Wort

Hypericum kalmianum 'SMHKBF'

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Blues Festival St. John's Wort (Hypericum kalmianum 'SMHKBF') at Skillins Greenhouse

Blues Festival® St. John's Wort in bloom

Blues Festival® St. John's Wort in bloom

(Photo courtesy of NetPS Plant Finder)

Blues Festival St. John's Wort (Hypericum kalmianum 'SMHKBF') at Skillins Greenhouse

Blues Festival® St. John's Wort flowers

Blues Festival® St. John's Wort flowers

(Photo courtesy of NetPS Plant Finder)

Height:  3 feet

Spread:  3 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  4a

Brand:  Proven Winners


An attractive and very colorful small shrub with eye-catching bright yellow sunburst flowers in mid summer over attractive blue-green foliage, and a neat, rounded form; a very versatile, low maintenance, native garden plant

Ornamental Features

Blues Festival® St. John's Wort has attractive bluish-green foliage with hints of powder blue on a plant with a spreading habit of growth. The narrow leaves are highly ornamental but do not develop any appreciable fall color. It is covered in stunning yellow pincushion flowers at the ends of the branches from early to mid summer. The flowers are excellent for cutting.

Landscape Attributes

Blues Festival® St. John's Wort is a multi-stemmed deciduous 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 is a good choice for attracting bees to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.

Blues Festival® St. John's Wort is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Groundcover
  • Naturalizing And Woodland Gardens
  • Container Planting

Planting & Growing

Blues Festival® St. John's Wort will grow to be about 3 feet tall at maturity, with a spread of 3 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 approximately 20 years.

This shrub does best in full sun to partial shade. It prefers to grow in average to dry locations, and dislikes excessive moisture. 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, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This is a selection of a native North American species.

Blues Festival® St. John's Wort 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. 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
Massing  Garden  Groundcover  Naturalizing  Container 
Flowers  Foliage Color  Attracts Wildlife 
Ornamental Features