Organic pesticides are usually considered as those pesticides that come from natural sources. They are usually minimally processed. These natural sources are usually plants or minerals. There are also microbial pesticides.
Useful information about Western Hemlock-Douglas Fir Forest, Prairie, Scrub-Shrub Wetlands, and Mixed Deciduous Forest/Steep Dry Slope.
Gardeners with small-scale orchards can take advantage of hazelnut varieties bred in recent years at Oregon State University that resist eastern filbert blight.