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Report an Invasive Species

Wild clematis

Wild clematis

Wild clematis

(Clematis vitalba)

Priority: -  Contain

Tags: Terrestrial

Identification and Reproduction

Identification

  • Deciduous perennial, native to central and southern Europe
  • In the Ranunculaceae, or buttercup, family
  • Climbing vine, woody stems, can grow 20 to 30 metres long
  • New stems are dark purple to green, tightly twist around objects
  • White linear flowers turn to vigorous feathery seed heads which survive over winter

Reproduction

  • Typically produce flowers after third year
  • Can reproduce vegetatively by re-growing from cut stems,compound leaves each have 5 leaflets when mature
  • Leaves are oval, heart-shaped, or lance-shaped stringy bark that will rub off


 

 

Habitat & Ecology

  • As an invasive, found in and around forested areas, wet and riparian areas
  • Grow much faster than ivy
  • Seeds dispersed by wind, water, people, animals 

 

Impacts

  • Chokes out native forest species by blocking sunlight,
  • Weighs down trees until they collapse or breaks branches, growing in dense mats over existing vegetation
  • Can cause dermatitis in people, and is poisonous to grazing animals

Management

  • Chemical control may be effective
  • Remove from properties, do not introduce to new places, do not plant ornamentally, remove flowers before they go to seed 
  • Combine manual, chemical methods. Cut lower vines and dig up from ground. 
  • Plant out native groundcovers to compete

Resources

https://www.agriculture.gov.ie/media/migration/farmingschemesandpayments/glastraining/OldMansBeardFinalDraft230616.pdf

http://www.iucngisd.org/gisd/species.php?sc=157

https://www.kingcounty.gov/services/environment/animals-and-plants/noxious-weeds/weed-identification/old-mans-beard.aspx

https://www.woodlandtrust.org.uk/visiting-woods/trees-woods-and-wildlife/plants-and-fungi/woodland-wildflowers/travellers-joy/

https://www.portlandoregon.gov/bes/article/172621

https://www.cal-ipc.org/plants/profile/clematis-vitalba-profile/

https://commons.wikimedia.org/wiki/File:Clematis_virginiana_001.JPG