Pacific Northwest Handbook: included in this handbook is insect management, plant disease, and weed management.
The Burke Museum Herbarium a plant identification key that helps to identify many native and naturalized plants in Washington.
Great Plant Picks a resource for locating plants that are suitable to Western Washington. They have been tried, tested and approved by a panel of judges at the Elisabeth Carey Miller Botanical Garden in Seattle.
Soil Sampling
How to Collect Soil for a Soil Test a bulletin from Oregon State University that explains how to collect soil and prepare it to submit for a soil test.
Pesticide Information
The National Pesticide Information Center information on many common household and garden pesticides