Resources – Weeds

Hairy bittercress weed

This section contains useful guides to handling invasive weeds, with a focus on weeds that are primarily a problem in urban settings.


4-County CWMA Weed Factsheets

Helpful guides in English and Spanish – Guías útiles en inglés y español!


Please note: the English versions of these factsheets were recently revised, and the Spanish versions will be replaced as soon as they are available.


Links to other resources:

BES Weed Identification Guide – a great visual guide to 31 commonly-occurring urban weeds to watch out for, from Portland Bureau of Environmental Services. Photos of early, mature and flowering stages, and whether to pull up or dig out each weed.

Portland Plant List – a comprehensive resource for both native and invasive plants, from the Portland Bureau of Planning and Sustainability.