Image of Campanulastrum americanum
Source: Donna Bos
image of Flowering plant
Campanulastrum americanum
American Bellflower
Campanule d'Amérique

Obsolete Names

tall bellflower
Seeds available at table Mixed Sun, Medium
We currently accept seeds for this plant
Bloom colour: Blue Bloom period: Jun - Aug
Max Height: 5.0 feet
Max Width: 2.0 feet
Light condition:
Full sun More than 6 hours of direct sun a day
Part shade More than 2 or 3 hours but less than 6 hours of direct sun a day
Soil conditions:
Moisture medium Tolerates medium soil condition
Lifespan: Biennial plants that will take two years to bloom, and then will die
Gardener Experience:
beginner friendly Suitable for beginner gardeners
does not spread Does not spread uncontrollably
plant germinate easy Easy to germinate
plant self seeding Self-seeding
Landscape uses:
container suitable Suitable for container garden
foot traffic tolerant Tolerates foot traffic
Ecological Benefits: No ecological benefits information available.
Tolerates:
foot traffic Tolerant Tolerates foot traffic
limestone Tolerant Tolerates limestone conditions
juglone Tolerant Tolerates juglone conditions
transplantation Tolerant Tolerates transplantation
Special Features and Considerations:

Plant Location

Native to Ottawa region: No

Distribution according to VASCAN

Distribution: Campanulastrum americanum
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent
View taxonomy on Canadensys

View on iNaturalist

Thrives in Ecozones

  • Mixed Wood Plains

Ecological Benefits

Butterflies Supported by Campanulastrum americanum

No butterfly data available for this plant.

Specialized Bees Supported by Campanulastrum americanum

No bee data available for this plant.

Plants that grow in similar conditions, that bloom at the same time.

Complementary Plants

Substitute For Non-Native Plants

  • Campanula (Non-Native Bellflower)
  • Petunia (Non-Native Petunias)
  • Myosotis sylvatica (Forget-me-not)

Sowing Information

Download Sowing Label (PDF)
  • Sowing depth: Surface sow
  • Sow by March
  • Stratification duration: 30 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 mean: Cut stem (including pods), let air dry in paper bag, then shake seeds off after a few days
  • Seed viability test: No test needed before donating
  • Packaging measure: 1 rounded 1/32 teaspoon
  • Seed storage: Air dry in paper bag or open container, for a few days until crisp, shaking seeds to move them once in a while to prevent molding
  • At least one 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

Not known to be toxic to mammals if ingested.