Common Weeds

Urban Conservationist Mary Logalbo shows your step by step instructions on removing invasive ivy from your land.
Invasive ivy strangling trees

Invasive ivy strangling trees

The District’s Invasive Weed Program is concerned with many common invasive weeds, such as English ivy and Armenian blackberry, along with the EDRR (Early Detection-Rapid Response) weeds. All invasive weeds can create a monoculture where native plants are crowded out and nothing but the weeds will flourish, upsetting the delicate balance needed to support healthy ecosystems for all plants and wildlife.

Here are the common weeds we can help you get rid of:

Himalayan and evergreen blackberry

Butterfly Bush

English holly

English and Irish ivy

Herb Robert

Italian arum

Lesser celandine

Old Man’s Beard or Traveler’s Joy clematis

For more questions about how we can help you, contact our Invasive Species Coordinator Michelle Delepine at or 503.238.4775, ext. 115.



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