Toxic Plant Connu comme étant toxique - Toxic to mammals if ingested. May cause photosensitivity if consumed in significant quantities.
Image of Hypericum fraseri
Source: OWSL

Plant Names

image of Plante à fleurs
Hypericum fraseri
Fraser's St. John's-wort
Millepertuis de Fraser

Synonyms

Fraser's marsh St. John's-wort
marsh St. John's-wort

Plant Characteristics

Couleur de floraison: Rose Bloom Period: Jul - Aug
Hauteur max: 2,0 feet
Max Width: 2,0 feet
Light Condition:
Full sun Plus de 6 heures d'ensoleillement par jour
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Moisture wet Tolère des conditions de sol humide
Lifespan: Vivace des plantes qui reviennent année après année
Gardener Experience:
beginner friendly Suitable for beginner gardeners
does not spread Ne se propage pas de manière incontrôlable
plant germinate easy Facile à germer
plant self seeding Self-seeding
Landscape Uses:
wetland garden Souhaitable dans les jardins de zone humide
Ecological Benefits: No ecological benefits information available.
Tolerates:
Limestone Tolerant Tolerates limestone conditions
Juglone Tolerant Tolerates juglone conditions
Transplantation Tolerant Tolerates transplantation
Special Features and Considerations:

Seed and plant distribution status

No seeds available for this plant.
Nous acceptions les semences de cette plante

Faits intéressants

Fraser's St. John's-wort has bright yellow flowers that bloom over a long period in summer. It performs well in sunny borders and naturalized gardens. The flowers attract native bees, bumble bees, butterflies, hoverflies, and beneficial insects. It is drought tolerant once established and it does not spread aggressively.

Plant Location

Distribution according to VASCAN

Distribution: Hypericum fraseri
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent

Thrives in Ecozones

  • Maritime de l'Atlantique
  • Plaines boréales
  • Bouclier boréal
  • Maritime du Pacifique
  • Plaines à forêts mixtes

Ecological Benefits

Butterflies Supported by Hypericum fraseri

No butterfly data available for this plant.

Specialized Bees Supported by Hypericum fraseri

No bee data available for this plant.

Complementary Plants

  • No complementary plants found.

Substitute For Non-Native Plants

  • Euonymus alatus (Burning Bush)
  • Buxus sempervirens (Boxwood)
  • Forsythieae (Forsythia)
  • Berberis (Barberry)

Sowing Information

Download Seed Envelope Labels (PDF)
  • Sowing depth: Surface sow
  • Sow anytime
  • Stratification duration: 0 days
  • Self-seeding

Harvesting and Seed Sharing

  • Harvest start month: September
  • Harvesting indicator:
    • Pods are brown, seeds are dark, and crisp, and little stem connecting the pod to the main stem is brown (not green)
  • Harvesting:
    • Cut stem (including pods), let air dry in paper bag, then shake seeds off after a few days
  • Seed viability test:
    • Pas de test requis avant le don
  • Packaging measure: 1 rounded 1/32 teaspoon
  • Seed storage:
    • Sécher à l'air dans un sac en papier ou contenant ouvert, pour quelques jours jusqu'à sec
    • Secouer de temps à autre pour prévenir la moisissure
  • Cultivar: No, you can donate without knowing the source as there are only straight species
  • Remove non-seed material
  • No harvesting video available at this time.

Toxicity Notes

Toxic to mammals if ingested. May cause photosensitivity if consumed in significant quantities.