Whaley, Dale

As winter canola acreage increases in Washington State, the cabbage seedpod weevil is becoming a problem. In addition to canola, this tiny weevil can also feed on flixweed, tansy mustard, and whitetop ...

The Integrated Weed Control Project (IWCP) from Washington State University is a way for landowners and land managers to learn about biological weed control and to learn about biological agents avail ...

Western waterhemlock (Cicuta douglasii) is the most poisonous plant in North America. This publication provides identifiers to assist in avoiding the toxic plant, including ways to distinguish it from ...

Yellow toadflax and Dalmatian toadflax are non-native plants that have become two of the most troublesome invasive weeds in North America.

Found in all areas of the Pacific Northwest, meadow deathcamas (Toxicoscordion venenosum) is capable of killing livestock whether eaten as forage or in dried hay. Human poisonings have been reported i ...

Spiders are commonly found in the Pacific Northwest. These photos and descriptions of common varieties should ease fears over encounters in darkened hallways. ...