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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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2019 crop protection guide for tree fruits in Washington
(Pullman, Washington : Washington State University Extension, 2019-03) -
Do black walnut trees have allelopathic effects on other plants?
(Pullman, Washington : Washington State University Extension, 2019-03)Gardeners have heard that black walnut trees (Juglans nigra) contain a toxic chemical called juglone that will kill any other plants growing nearby. This phenomenon is called allelopathy, and, in recent years, many other ... -
Unmanned aerial systems in agriculture. Part 3, Mid-sized UAS
(Pullman, Washington : Washington State University Extension, 2019-03)In recent years, the agribusiness industry has been trying to keep pace with rapid developments, one of which is in the sector of small unmanned aerial systems (UASs). These systems have gained the attention of growers and ... -
Cornmeal and corn gluten meal applications in gardens and landscapes
(Pullman, Washington : Washington State University Extension, 2019-03)Cornmeal and corn gluten meal, both products from corn milling, are readily available to home gardeners. This fact sheet reviews the horticultural science behind each of these products and explains whether they have a legal ... -
Garden fertilizer calculator
(Pullman, Washington : Washington State University Extension, 2019-02)These worksheets calculate fertilizer application rates for gardens, garden beds, lawns, single plants, and short rows, based on fertilizer recommendations. It is a companion to A Home Gardener’s Guide to Soils and ... -
Use of protective netting in Washington State apple production
(Pullman, Washington : Washington State University Extension, 2019-02)Washington State (WA) is the largest producer of apples in the United States. The major apple growing regions in WA are located in the semi-arid eastern half of the state which experiences harsh environmental conditions ... -
Growing food on parking strips and in front yard gardens
(Pullman, Washington : Washington State University Extension, 2019-02)Parking strip and front yard vegetable gardens are increasingly popular in urban neighborhoods in Washington State. These locations may be the sunniest spots in the yard, and they offer an opportunity to expand garden space ... -
Phytophthora crown, collar, and root rot of apple and cherry
(Pullman, Washington : Washington State University Extension, 2019-02)Phytophthora rots can girdle the scion (collar rot), damage the rootstock just below the soil surface (crown rot), and cause necrosis and death of fine roots (root rot). While generally considered a larger problem in ... -
Apple replant disease
(Pullman, Washington : Washington State University Extension, 2019-02)Replant disease is a widespread problem in areas that grow tree fruit and nuts, greatly impacting intensive apple production. It is characterized by reduced productivity in fields repeatedly planted to the same or closely ... -
Using biosolids in gardens and landscapes
(Pullman, Washington : Washington State University Extension, 2019-02)Closing the recycling loop means turning waste materials into useful products. We close the recycling loop in our gardens and landscapes when we use compost made from yard debris and food waste, and organic fertilizers ... -
Organic soil amendments in yards and gardens : how much is enough?
(Pullman, Washington : Washington State University Extension, 2019-02)Gardeners apply organic soil amendments to improve soil and raise healthy plants. While organic soil amendments benefit most garden soils, over-application can waste money, increase the risk of harm to water quality, and ... -
Buckwheat control in wheat
(Pullman, Washington : Washington State University Extension, 2019-01)Washington State is a large producer of buckwheat (Fagopyrum esculentum), much of which is exported overseas. Unfortunately, in recent years, some foreign grain buyers have been finding low levels of buckwheat in their ... -
Field equipment for grain production on modest acreages and diversified farm operations
(Pullman, Washington : Washington State University Extension, 2019-01)This Extension manual provides an introduction to grain production equipment appropriate for small- and medium-scale farmers new to grain growing as well as considerations for sourcing affordable and reliable farming ... -
Petiole sap nitrate-N quick test for determining nitrogen status of tomato
(Pullman, Washington : Washington State University Extension, 2019-01)Most vegetable farmers use nitrogen fertilizers to increase crop yield and quality. However, applying more nitrogen than the crop can take up increases production costs and may contribute to environmental pollution. To ... -
A framework for conducting situation assessments
(Pullman, Washington : Washington State University Extension, 2019-01)Extension professionals are increasingly asked to convene communities facing conflict, including complex social, economic, environmental and technological situations. A collaborative process with facilitated problem solving ... -
Establishing a cider apple orchard for mechanized management
(Pullman, Washington : Washington State University Extension, 2019-01)The goal of this manual is to provide commercial cider apple growers with orchard management options that will reduce the need for orchard labor. Specific objectives are to provide guidance to growers in establishing a ... -
Timeless traditions : council circles in a modern world
(Pullman, Washington : Washington State University Extension, 2019-01)Councils, or talking circles, have long been valued by indigenous cultures as the practice for building community and consensus, making decisions, and recognizing the significance of relationships. A Council Circle is a ... -
2019 pest management guide for grapes in Washington
(Pullman, Washington : Washington State University Extension, 2018-12)The Pest Management Guide for Grapes in Washington presents various chemicals and their uses against pest problems in Washington vineyards. While the recommendations are based on eastern Washington conditions, the information ... -
Pulse on health : garden-based pulse nutrition and biology grade 4 curriculum
(Pullman, Washington : Washington State University Extension, 2018-12)School gardens are a valuable tool for education. A school garden can serve as a biological classroom, where students use all their senses while increasing academic achievement. Students learn by connecting to the earth, ... -
Proactive approaches for controlling recombinant Potato virus Y strains in Western Washington
(Pullman, Washington : Washington State University Extension, 2018-12)Recombinant strains of Potato virus Y (PVY) were detected in western Washington for the first time in 2012 and 2013. Recombinants can arise naturally when two or more different virus strains co-infect a plant cell. The ...