Green Cities Toolbox – invasive species

These tools are part of a resource collection community-based stewardship of urban forested parklands and natural areas. Included here are resources on the identification and management of aggressive non-native plants and insects.

Green Cities Steward Plant Guide

A collection of native plant palettes for use in a variety of planting projects, in addition to some of our most common invasive plants. This can be a guide for beginners just learning to identify Northwest plants, and a reference for those seeking plants for specific locations.

Washington Native Plant Society (WNPS) Starflower Resources

Materials include hands-on activities, native plant identification cards, weed identification cards, and informational posters.

UW Burke Museum Herbarium

A comprehensive collection of photos and information on plants and lichens of Washington.

King County Going Native

This site features a native plant guide, how-to articles, and other helpful resources.

USDA Plant Database

The database provides information about vascular plants, mosses, liverworts, hornworts, and lichens found in the US.

Grow Your Own Native Landscape

A how-to guide for the propagation and salvage techniques of Pacific Northwest native plants.

Green Cities Native Plant Propagation Field Guide

This guide includes 32 plants commonly used in our restoration projects and provides information about best season to propagate, best propagation method and images to aid in field identification. The guide is designed to be printed on loose leaf Rite-in-the-Rain 8 ½” X 11” paper, pre-perforated to 4 5/8” X 7” to fit in Rite-in-the-Rain field binders, though it can be printed on two sides, cut and staple-bound. For more information contact

English holly in invasive to the Pacific Northwest