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Flowers, Shrubs, and Ornamentals Publications & Resources

American Chestnut > PDF
Whether you are planning one American chestnut in your yard or planning to establish a plantation with hundreds of trees, there are some basic planning, planting and maintenance activities you should . . . . . more details

Black Cherry > PDF
Whether you are planning one black cherry tree in your yard or planning to establish a plantation with hundreds of trees, there are some basic planning, planting and maintenance activities you should . . . . . more details

Black Walnut > PDF
Black Walnut is one of the most-highly prized North American hardwoods. A tasty nut crop and aesthetically pleasing characteristics make black walnut an attractive choice for Idaho landowners with the . . . . . more details

Carpathian Walnut > PDF
Carpathian Walnut is known for its outstanding nut qualities and fine wood and aesthetic characteristics. Whether you are planning one tree in your yard or planning to establish a plantation with hund . . . . . more details

Fire-Resistant Plants for Home Landscapes > PDF
Lavishly illustrated with full-color photography, this booklet pictures fire-resistant ground covers, perennials, shrubs, and trees. It provides information on how homeowners can landscape their prope . . . . . more details
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Hardwoods 101: Planning, Planting, and Maintenance > PDF
Whether you are planning one hardwood tree in your yard or planning to establish a plantation with hundreds of trees, there are some basic planning, planting, and maintenance activities that will bene . . . . . more details

Hardy Roses for Harsh Climates > HTML
Love roses but live in a cold, high-elevation Idaho location? Don't worry. You can still grow many beautiful kinds of the national flower. Stephen L. Love studied dozens of rose varieties for their ab . . . . . more details

Herbaceous Ornamentals: Annuals, Perennials, and Ornamental Grasses > PDF
How to obtain, plant, and care for flowers, grasses, and bulbs for the short-season garden. Includes detailed tables listing hardy annuals, perennials, bulbs and grasses suitable for short-season, h . . . . . more details

How To Prune Coniferous Evergreen Trees > HTML
Evergreen shade trees are beautiful features in many Idaho cities and towns. Yet they can become ill or a hazard without regular care. This classic Extension bulletin provides helpful diagrams, images . . . . . more details

Idaho Plant Quarantines and the Home Garden: Understanding the Laws > PDF
What farmers know but many home gardeners are just learning is that the shipping, sale, and planting of some 70 food crop or nursery species in Idaho are governed by state quarantine laws overseen b . . . . . more details

Landscaping and Utilities: Problems, Prevention, and Plant Selection > PDF
Without careful planning and plant selection prior to planting, trees and shrubs can become a nuisance and a dangerous and costly problem for homeowners and businesses. This publication has informat . . . . . more details

Landscaping with Native Plants > HTML
Cultivate healthier soils and more resilient plants on your Idaho property by using plants native to the Intermountain West in your landscape design. This extensive bulletin, with astute insights from . . . . . more details

Leaf Spot of Aspen and Poplar > HTML
This fact sheet for home gardeners covers symptoms, life cycle, and control measures for leaf spot, a common and occasionally serious disease of aspen and poplar trees caused by fungi in the genus . . . . . more details

Management of White Pine Weevil in Spruce > PDF
In the West the white pine weevil, Pissodes strobi, almost exclusively attacks spruce rather than pine trees. Of major concern to homeowners, nurseries, and landscape businesses, the weevil c . . . . . more details

Oaks > PDF
Excellent wood qualities, adaptability to a wide range of growing conditions, superb wildlife value, and vivid fall coloration all make Oaks an attractive selection for alternative tree crops for Idah . . . . . more details

Ornamental Grasses for Idaho Landscapes > PDF
Ornamental grasses are becoming irreplaceable landscape elements in many parts of the United States and are increasingly popular in Idaho. This 6-page publication lists the best grasses for Idaho's . . . . . more details

Paulownia > PDF
Royal Paulownia has very special physical and cultural needs. But with the right site and cultural practices, paulownia could be a successful alternative tree crop for Idaho private landowners. Whethe . . . . . more details

Planning and Planting a Five-Row Windbreak > PDF
A properly designed and maintained windbreak provides many benefits to you and the environment including home energy conservation, improved crop yields, snow drift control, and more. Read about these . . . . . more details

Plant Your Seedlings Right > PDF
In order to ensure the highest level of success in planting seedlings, there are many practices you will want to consider. This publication covers the correct ways to handle, plant, and care for your . . . . . more details

Propagating Shrubs, Vines, and Trees from Stem Cuttings > PDF
Adding more greenery to your home landscape? Tired of buying so many trees and shrubs to do it? A possible alternative is to use stem cuttings from your current trees and shrubs to make more, a method . . . . . more details

Propagation of Plants by Grafting and Budding > PDF
This handbook is well illustrated with clear photographs and drawings. It covers terms used in budding and grafting, tools and materials, grafting and budding factors, kinds of grafts, budding methods . . . . . more details
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Selecting, Planting, and Caring for Trees, Shrubs, and Vines > PDF
Because they come in a variety of sizes and shapes, woody plants (trees, shrubs, and vines) are unique landscape elements that can provide scale and balance, soften a building’s hard edges, and/or add . . . . . more details

Sugar Maple > PDF
Maple syrup and brilliant fall colors—that’s what sugar maples are best known for. With the right site choice and management, you too can grow sugar maples and reap the many benefits of this magnifice . . . . . more details

Trees for Southwestern Idaho Landscapes: Selection and Irrigation > HTML
To paraphrase a Chinese proverb, it’s always a good time to plant a tree, but the dry southwestern Idaho climate might give you second thoughts. This bulletin will restore hope. Learn how to choose th . . . . . more details

Watering Home Lawns and Landscapes > PDF
Wise water use saves homeowners money, enhances property values, and supports a watershed. This publication details the liabilities of incorrect watering and the benefits of proper irrigation by discu . . . . . more details


Local Information

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University of Idaho Extension


Physical Address:
E. J. Iddings Agricultural Science Laboratory, Room 10
606 S Rayburn St

Mailing Address:
875 Perimeter Drive MS 2332
Moscow, ID 83844-2332

Phone: 208-885-7982

Fax: 208-885-9046



Barbara Petty