St. John's Wort

Hypericum kalmianum


USPP 25,795; CBR 5306

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Three specimens of Blues Festival hypericum in a landscape showing their dense yellow flower coverage blue foliage and neatly rounded habit Closeup of the yellow puffball flowers of Blues Festival hypericum contrasting with the narrow blue leaves A specimen of Blues Festival hypericum showing its habit and yellow blooms Five specimens of Blues Festival hypericum in the landscape showing their handsome blue foliage Closeup of a portion of Blues Festival hypericum showing its flower coverage and contrast with the blue foliage YouTube video describing the plant shown on this page
  • Long blooming
  • Colorful foliage
  • Deer resistant
Looking for a better blue? Here it is! The attractive blue leaves of Blues Festival hypericum contrast with the bright yellow flowers in July and August. The combination of long-blooming yellow flowers and cool blue-green foliage is very appealing. Tightly branched, compact growth makes this a good native plant for landscaping.

USDA Zone 4 - 7 (-30°F/-34°C)

icon visually displaying the size and shape of this plant variety

Exposure Full sun

Height 2 - 3'

Width 2 - 3'

Finish Time 1 season

Type Deciduous

Bloom Time Summer

Flower Color Yellow

Foliage Color Blue

Liner Sizes 2 1/4", 4", Quick Turn

Soil Adaptable to any well-drained soil.

Pruning Prune to shape in spring if desired or required.

Uses Specimen; hedge; edging; foundation plantings; mixed borders.

Growing Tips Plant in full sun for best form, flower set, and foliage color.