Skip to Main Content View Text-Only

The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

Garlic Mustard

garlic mustardAlliaria petiolata (garlic mustard)

Garlic mustard, a European native, was introduced to North America and regionally as a garden herb. In general, it is considered a biennial, needing two growing seasons to produce seed, although local land managers have seen many exceptions to this rule. Environmental Services is collaborating with the following jurisdictions and entities to manage the spread of garlic mustard in the Portland region:

  • Portland Parks & Recreation
  • West Multnomah Soil & Water Conservation District
  • East Multnomah Soil & Water Conservation District
  • Clean Water Services
  • Johnson Creek Watershed Council
  • City of Gresham

What is being done about it?

How Environmental Services works to control the spread of invasive garlic mustard

Garlic Mustard Scientific Literature Review 2017

Impacts and treatment of garlic mustard (Alliaria petiolata): application of research to populations in the Portland, Oregon metro area