WSU Extension Publications|General Gardening

Petiole Sap Nitrate-n Quick Test for Determining Nitrogen Status of Tomato

Nitrogen helps keep tomatoes healthy and productive—so how to know if they have gotten enough of it? Find out more here. ...

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Phosphorus and Home Lawns: Quick Facts and Recommendations (Home Garden Series)

Phosphorus (P) is an essential plant nutrient, but it is also a potential pollutant. Phosphorus fertilization helps maintain healthy lawns growing in P-deficient soils, but P runoff into lakes and st ...

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Planting Trees and Shrubs in the Landscape (Home Garden Series)

Trees and shrubs form the backbone of any well-designed landscape. Unfortunately, problems associated with root systems often doom the trees and shrubs in our landscapes to failure.

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Pollination and Pollinator Protection (Home Garden Series)

Pollination is a critical process that most plants need to set seeds and produce fruit. Understanding pollination ecology is important for both commercial growers and home gardeners; however, this pu ...

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Potential Contaminants in Residential Rain Barrel Water (Home Garden Series)

Home gardeners often collect rainwater to supplement summer irrigation, but rooftop runoff can be contaminated. This publication examines the research behind residential rain barrel water safety in an ...

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Propagation of Plants from Specialized Structures

This substantially updated publication explains the various types of specialized plant structures that can be used to grow new plants. Individual reproduction requirements and options are detailed, an ...

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Protecting Backyard Walnut Trees from Walnut Husk Fly

Walnut trees are popular among homeowners in the Pacific Northwest and, as such, provide quite a lot of habitat for pests. The most frequent pest problem encountered in producing walnuts in the backya ...

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Protecting Grapevines from Winter Injury

This publication describes three systems (burying canes in a V-trench, J-system training, and spur-pruned rose training) that may help prevent grapevine injury from winter freezes, which reduce fruit ...

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Pruning Equipment for Home Gardeners (Home Garden Series)

Selecting and using the correct equipment to prune trees and shrubs makes a pruning job quicker, easier, and safer for home gardeners. This fact sheet discusses the various types of pruning equipment, ...

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