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This community features publications and educational materials created by the WSU Extension, a network of agricultural experts across Washington state. With 39 locations throughout the state, WSU Extension builds the capacity of individual, organization, businesses and communities, empowering them to find solutions for local issues and to improve their quality of life. Extension collaborates with communities to create a culture of life-long learning and is recognized for its accessible, learner-centered, relevant, high-quality, unbiased educational programs.
WSU Extension began in 1913, a year ahead of federal legislation authorizing the present extension system. In that year, Washington state authorized a Bureau of Farm Development headquartered at Washington State College and provided for the appointment and maintenance of agricultural experts across the state. By then, however, George A. Nelson, the first county extension worker, had been on the job for more than two months. Nelson was appointed as agriculturist for Wahkiakum County December 12, 1912. He was absorbed into the new Bureau. Pioneer extension educators established a philosophy that’s still relevant today: “helping farmers to help themselves.”
Please be aware that the information in these publications may be obsolete;
Contact the Washington State University Extension Service directly to confirm the most up-to-date editions or information.
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Pacific poison-oak and western poison-ivy : identification and management
(Pullman, Washington : Washington State University Extension, 2018-11)Pacific poison-oak is common in western Oregon and Washington. Its near relative, western poison-ivy, is found in eastern Oregon and Washington, throughout Idaho, and eastward. These plants are so similar in their appearance, ... -
Trends in Washington state organic diversified vegetable production
(Pullman, Washington : Washington State University Extension, 2018-10)Organic farming has become a well-established component of U.S. agriculture. Diversified vegetable production was a common production model, and direct marketing was often pursued. Fueled by rising consumer demand for fresh ... -
Camp Long Challenge Course : low course facilitator pocket guide
(Pullman, Washington : Washington State University Extension, 2018-10)Challenge Course facilitators play a vital role in experiential education. They provide opportunities for participants to grow, explore, and take risks in unique environments. Their behavior directly influences participant ... -
Ethanol in the Pacific Northwest
(Pullman, Washington : Washington State University Extension, 2018-09)This factsheet provides background on ethanol as a transportation biofuel and discusses the role ethanol plays in the Pacific Northwest (PNW) states of Washington, Oregon, and Idaho. This includes describing relevant ... -
Nutrient recovery : products from dairy manure to improve soil fertility
(Pullman, Washington : Washington State University Extension, 2018-09)The purpose of this publication is to increase awareness of nutrient recovery products in the early stages of commercialization. We aim to provide a summary of the status of nutrient recovery products’ research and application ... -
Common spiders of Washington
(Pullman, Washington : Washington State University Extension, 2018-09)Wherever you find insects, you are likely to find spiders lurking nearby. All spiders are predators that have coevolved with their prey—primarily insects and other arthropods. Spiders have evolved numerous and fascinating ... -
Epsum salt use in home gardens and landscapes
(Pullman, Washington : Washington State University Extension, 2018-09)Epsom salt is a popular soil amendment for home gardeners with anecdotally-reported value as a fertilizer and pesticide. However, it is not registered as a pesticide, nor should it ever be used as a pesticide. This publication ... -
The larger moths found in Washington State
(Pullman, Washington : Washington State University Extension, 2018-09)The insect order Lepidoptera includes moths and butterflies and is the most recognized group of insects in the world. Perhaps this popularity is due to the wide range of colorful wing patterns that adult moths and butterflies ... -
Gypsum use in home gardens and landscapes
(Pullman, Washington : Washington State University Extension, 2018-09)Gypsum has long been promoted as a soil amendment for home gardeners who wish to improve their soil structure. Popular books and websites claim that gypsum will loosen compacted soils and improve drainage. Gypsum is also ... -
Condensed tannin measurements in Eastern WA cider juices and hard cider
(Pullman, Washington : Washington State University Extension, 2018-09)As commercial US hard cider production continues to increase, Washington hard cider production has experienced steady growth as well. Typical apple varieties originally cultivated in the UK and used for hard cider are grown ... -
How are Hydrangea flower colors determined?
(Pullman, Washington : Washington State University Extension, 2018-09)The flowers of many hydrangea cultivars run the gamut of colors from pink to purple to blue. Some newer cultivars are “chameleon” hydrangeas, whose colors change throughout the season. All of these colors are due to pigments ... -
Biosecurity : for the sheep shearer
(Pullman, Washington : Washington State University Extension, 2018-09)Biosecurity is defined as preventative management practices that protect the health and wellbeing of both animals and humans from the entry or spread of disease agents. For on-farm biosecurity to be successful, everyone ... -
Rattail fescue : biology and management in Pacific Northwest wheat cropping systems
(Pullman, Washington : Washington State University Extension, 2018-08)Farmers are discovering that weed management practices must be adjusted to control species previously susceptible to tillage as direct-seed wheat production practices become more widely adopted to conserve soil and water ... -
Alternative sources of Potato virus Y in Western Washington
(Pullman, Washington : Washington State University Extension, 2018-08)While many potato growers in western Washington (WWA) are diligent about managing Potato virus Y (PVY) from commonly known inoculum sources, there are various means that are not always recognized by which PVY is able to ... -
Advanced facilitator guide for in-depth ripple effects mapping
(Pullman, Washington : Washington State University Extension, 2018-08)Ripple Effects Mapping (REM) is a multi-step process used to engage participants in an evaluation. It starts with Appreciative Inquiry questions to guide participants in telling their stories of success to one other person. ... -
Important considerations for the use of biodegradable mulch in crop production
(Pullman, Washington : Washington State University Extension, 2018-08)Farmers use mulch to control weeds, conserve soil moisture, help improve crop yield, and obtain several other benefits during the crop growing season. Several studies have shown that biodegradable mulches (BDM) are comparable ... -
A mayweed chamomile growing degree day model for the Inland Pacific Northwest
(Pullman, Washington : Washington State University Extension, 2018-08)Mayweed chamomile (Anthemis cotula L.) is a problematic weed in agronomic production systems in the inland Pacific Northwest (iPNW), primarily in higher rainfall zones. Emerging issues that impact successful management of ... -
Conservation tillage in a winter wheat-fallow system : Ron Jirava
(Pullman, Washington : Washington State University Extension, 2018-08)Ron Jirava farms near Ritzville, WA, in an area receiving 11.5 inches of annual precipitation. In this publication, Jirava discusses his tillage strategies, including his use of the undercutter sweep, and his experimentation ... -
Deficit irrigation of a diverse irrigated rotation : Jake Madison : Farmer-to-Farmer Case Study Series : Increasing Resilience Among Farmers in the Pacific Northwest
(Pullman, Washington : Washington State University Extension, 2018-07)Jake Madison farms in Echo, Oregon, growing wheat, corn, alfalfa, canola, and onions. He also leases ground to other farmers for production of potatoes, peas, beans, and grass seed. In this publication, Madison discusses ... -
Strip-tillage for onions and sweet corn : Lorin Grigg : Farmer-to-Farmer Case Study Series : Increasing Resilience Among Farmers in the Pacific Northwest
(Pullman, Washington : Washington State University Extension, 2018-06)Lorin Grigg grows onions and sweet corn under sprinkler irrigation in Quincy, Washington. In this publication, Grigg discusses his strategy for cover cropping to protect seedlings from windblown sand and reduce wind erosion. ...