Connu comme étant toxique - Toxic to mammals if ingested. May cause photosensitivity if consumed in large quantities.
Plant Names
Hypericum prolificum
Shrubby St. John's-wort
Millepertuis prolifère
Plant Characteristics
Couleur de floraison: Jaune
Bloom Period: Jul - Sep
Hauteur max: 4,0 feet
Max Width: 4,0 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:
Suitable for rock gardens
Suitable for shoreline rehabilitation
Suitable for container garden
Suitable for school gardens
Tolerates boulevard garden conditions
Suitable for rock gardens
Suitable for shoreline rehabilitation
Suitable for container garden
Suitable for school gardens
Tolerates boulevard garden conditions
Ecological Benefits:
Supports birds
Supports birds
Tolerates:
Tolerates salt conditions
Deer resistant
Rabbit resistant
Tolerates limestone conditions
Tolerates sandy conditions
Tolerates acidic soil conditions
Tolerates juglone conditions
Tolerates transplantation
Tolerates salt conditions
Deer resistant
Rabbit resistant
Tolerates limestone conditions
Tolerates sandy conditions
Tolerates acidic soil conditions
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
Shrubby St. John's-wort is covered in bright yellow flowers from midsummer into fall. It tolerates drought, poor soils, and urban conditions, making it one of the easiest native shrubs to grow. It is excellent for native bees, bumble bees, sweat bees, butterflies, hoverflies, and beneficial insects. Birds may use the shrub for nesting cover. It is drought tolerant.
Plant Location
Distribution according to VASCAN
Ephemeral
Native
Introduced
Excluded
Extirpated
Doubtful
Absent
Canadensis
Thrives in Ecozones
- Plaines boréales
- Plaines à forêts mixtes
Ecological Benefits
Butterflies Supported by Hypericum prolificum
No butterfly data available for this plant.
Specialized Bees Supported by Hypericum prolificum
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
- Notes: Can be sown in late spring in warm soil.
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 quantities.