Connu comme étant toxique - Toxic to mammals if ingested. May cause photosensitivity if consumed in large amounts.
Source: aarongunnar
Plant Names
Hypericum majus
Large St. John's-wort
Millepertuis majeur
Synonyms
greater Canada St. John's-wort
greater St. John's-wort
larger Canada St. John's-wort
Plant Characteristics
Couleur de floraison: Jaune
Bloom Period: Jul - Sep
Hauteur max: 2,0 feet
Max Width: 2,0 feet (spreads by rhizome)
Light Condition:
Plus de 6 heures d'ensoleillement par jour
More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Tolerates medium soil condition
Plus de 6 heures d'ensoleillement par jour
More than 2 or 3 hours but less than 6 hours of direct sun a day
Tolerates medium soil condition
Lifespan:
Vivace
des plantes qui reviennent année après année
Gardener Experience:
Suitable for beginner gardeners
Ne se propage pas de manière incontrôlable
Spreads by rhizome
Facile à germer
Self-seeding
Suitable for beginner gardeners
Ne se propage pas de manière incontrôlable
Spreads by rhizome
Facile à germer
Self-seeding
Landscape Uses:
No landscape information available.
Ecological Benefits:
No ecological benefits information available.
Tolerates:
Deer resistant
Rabbit resistant
Tolerates juglone conditions
Tolerates transplantation
Deer resistant
Rabbit resistant
Tolerates juglone conditions
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
Large St. John's-wort prefers moist meadows, pond edges, and wetlands. It provides pollen for native bees, hoverflies, and beneficial insects. Let it self-seed to ensure that you can plants from year to year. It is best suited to naturalized gardens.
Plant Location
Native to Ottawa region: Oui
Distribution according to VASCAN
Ephemeral
Native
Introduced
Excluded
Extirpated
Doubtful
Absent
Canadensis
Thrives in Ecozones
- Taïga des plaines
- Maritime de l'Atlantique
- Plaines boréales
- Cordillière montagnarde
- Bouclier boréal
- Maritime du Pacifique
- Plaines à forêts mixtes
Ecological Benefits
Butterflies Supported by Hypericum majus
No butterfly data available for this plant.
Specialized Bees Supported by Hypericum majus
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 by February
- Stratification duration: 60 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 large amounts.