Toxic Plant Known to be toxic - Toxic to sheep if ingested.
Image of Agalinis tenuifolia
Source: OWSL
image of Flowering plant
Agalinis tenuifolia
Slender-leaved False Foxglove
Gérardie à feuilles ténues

Obsolete Names

slender agalinis
slender-leaved agalinis
slender-leaved purple false foxglove
gérardie à grandes feuilles
gérardie à petites feuilles
gérardie à petites fleurs
No seeds available for this plant.
We currently accept seeds for this plant
Bloom colour: Purple Bloom period: Aug - Oct
Max Height: 2.0 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: Annual plants that have a lifespan of one year
Gardener Experience:
plant self seeding Self-seeding
Landscape uses:
wetland garden Suitable for wetland garden
Ecological Benefits: No ecological benefits information available.
Tolerates:
juglone Tolerant Tolerates juglone conditions
Special Features and Considerations:

Plant Location

Native to Ottawa region: Yes

Distribution according to VASCAN

Distribution: Agalinis tenuifolia
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent
View taxonomy on Canadensys

View on iNaturalist

Thrives in Ecozones

  • Atlantic Maritime
  • Prairies
  • Boreal Shield
  • Mixed Wood Plains

Ecological Benefits

Butterflies Supported by Agalinis tenuifolia

No butterfly data available for this plant.

Specialized Bees Supported by Agalinis tenuifolia

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

  • Lamium (Dead nettle)

Sowing Information

Download Sowing Label (PDF)
  • Sowing depth: Surface sow
  • Sow by February
  • Stratification duration: 60 days
  • Self-seeding
  • Notes: Hemiparasitic: sow with grasse.

Harvesting and Seed Sharing

  • Harvest start month: October
  • 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: Open the pod, remove seeds
  • 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

Toxic to sheep if ingested.