Connecticut Plants
Great St. Johnswort
Hypericum ascyron L.

Great St. Johnswort is a species of special concern in Connecticut. This plant was photographed in New England Wild Flower Society's rare plants garden.

  • Synonyms: Hypericum pyramidatum
  • Family: St. Johnswort (Hypericaceae)
  • Habitat: streambanks, wet meadows and thickets
  • Height: 2-6 feet
  • Flower size: 2 inches across
  • Flower color: yellow
  • Flowering time: June to August
  • Origin: native
Hypericum ascyron L.
Hypericum ascyron L.
Hypericum ascyron L.

The fruits of great St. Johnswort are large, pyramid-shaped capsules.