Plant Names
Symphyotrichum ontarionis
Ontario Aster
Aster d'Ontario
Plant Characteristics
Bloom Colour: White
Bloom Period: Aug - Oct
Max Height: 4.0 feet
Max Width: 1.0 feet (spreads by rhizome)
Light Condition:
More than 6 hours of direct sun a day
More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Tolerates medium soil condition
Tolerates wet soil condition
More than 6 hours of direct sun a day
More than 2 or 3 hours but less than 6 hours of direct sun a day
Tolerates medium soil condition
Tolerates wet soil condition
Lifespan:
Perennial
plants that will come back year after year
Gardener Experience:
Spreads by rhizome
Self-seeding
Spreads by rhizome
Self-seeding
Landscape Uses:
No landscape information available.
Ecological Benefits:
Supports birds
Keystone species
Supports birds
Keystone species
Tolerates:
Tolerates juglone conditions
Tolerates juglone conditions
Special Features and Considerations:
This plant is a GRASP candidate
This plant is a GRASP candidate
Seed and plant distribution status
No seeds available for this plant.
We currently accept seeds for this plant
Fun Facts
Ontario Aster is a tall, branching perennial found in moist meadows, woodland edges, stream banks, and open areas. It produces numerous small pale lavender to white flowers with yellow centres in late summer and fall. Its airy growth habit makes it particularly suitable for naturalized gardens.
Plant Location
Native to Ottawa region: Yes
Distribution according to VASCAN
Ephemeral
Native
Introduced
Excluded
Extirpated
Doubtful
Absent
Canadensis
Thrives in Ecozones
- Boreal Shield
- Mixed Wood Plains
Ecological Benefits
Butterflies Supported by Symphyotrichum ontarionis
-
Eupithecia miserulata
American Common Pug
Specialized Bees Supported by Symphyotrichum ontarionis
No bee data available for this plant.
Complementary Plants
- Scrophularia marilandica
Eastern/carpenter's Figwort
Scrofulaire du Maryland - Solidago flexicaulis
Zigzag Goldenrod
Verge d'or à tige zigzagante
Substitute For Non-Native Plants
- Polygonatum odoratum (Solomon's Seal)
- Polygonatum odoratum).1 (Solomon's Seal)
Sowing Information
Download Seed Envelope Labels (PDF)
- Sowing depth: Not available
- Sow anytime
- Stratification duration: 0 days
- Self-seeding
Harvesting and Seed Sharing
- Harvest start month: October
- Harvesting indicator:
- Seeds have become fluffy and can be easily removed by shaking on gently pulling off from stem
- Harvesting:
- Shake into paper bag
- Seed viability test:
- No test needed before donating
- Packaging measure: 1 rounded 1/8 teaspoon
- Seed storage:
- Air Dry in paper bag or open container, for a few days until crisp
- Shake seeds to move them once in a while to prevent molding
- Cultivar: No, you can donate without knowing the source as there are only straight species
- No harvesting video available at this time.
GRASP Candidate
Rare/endangered native plants within 50km radius of Ottawa approximately. Burton is anchor study, plus iNaturalist observations to corroborate if any recent spotting.