Toxic Plant Known to be toxic - Toxic to mammals if ingested.
Image of Clematis occidentalis
Source: US Fish and Wildlife Service Midwest Region
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Clematis occidentalis
Purple Clematis
Clématite verticillée

Synonyms

northern blue clematis
purple virgin's-bower
atragène d'Amérique
clématite occidentale
No seeds available for this plant.

We are not accepting seeds for this plant at the moment.

Bloom Colour: Purple Bloom Period: May - Jul
Max Height: 6.0 feet
Max Width: 4.0 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: Perennial plants that will that come back year after year
Gardener Experience:
beginner friendly Suitable for beginner gardeners
does not spread Does not spread uncontrollably
plant self seeding Self-seeding
Landscape Uses:
rock garden Suitable for rock gardens
Ecological Benefits: No ecological benefits information available.
Tolerates:
Deer Resistant Deer resistant
Rabbit Resistant Rabbit resistant
Foot Traffic Tolerant Tolerates foot traffic around the plant
Juglone Tolerant Tolerates juglone conditions
Transplantation Tolerant Tolerates transplantation
Special Features and Considerations:
septic tank safe This plant is septic tank safe
causes skin rashes This plant causes skin rashes

Plant Location

Distribution according to VASCAN

Distribution: Clematis occidentalis
Ephemeral Native Introduced Excluded Extirpated Doubtful Absent

Thrives in Ecozones

  • Boreal Plains
  • Montane Cordillera
  • Boreal Shield

Ecological Benefits

Butterflies Supported by Clematis occidentalis

No butterfly data available for this plant.

Specialized Bees Supported by Clematis occidentalis

No bee data available for this plant.

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

Complementary Plants

  • No complementary plants found.

Substitute For Non-Native Plants

  • Clematis (Non-native Clematis)
  • Lonicera).1 (Non-Native Honeysuckle)
  • Hedera helix (English Ivy)
  • Ipomoea (Morning Glories)

Sowing Information

Download Seed Envelope Labels (PDF)
  • Sowing depth: Sow just below surface
  • Sow by January
  • Stratification duration: 90 days
  • Self-seeding

Harvesting and Seed Sharing

  • Harvest start month: September
  • Harvesting indicator:
    • Seeds have become fluffy and can be easily removed by shaking on gently pulling off from stem
  • Harvesting:
    • Use hand to detach from main stem
  • Seed viability test:
    • No test needed before donating
  • Packaging measure: A dozen (12) seeds (eyeball)
  • 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: Yes, do not donate unless you know source, and there are no known cultivars in your garden or at proximity
  • Harvesting video: Watch here

Toxicity Notes

Toxic to mammals if ingested.