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Plant Diseases

Spruce Disorders in ND

Diagnosing Spruce Disorders in North Dakota - F1818

Over a dozen disorders of spruce trees are presented. Disorders include insects, diseases, human-caused problems, environmental disorders and others. Color photos are included.

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Tree Diagnostic Series

Tree Diagnostic Series - F1807

This series of 23 cards will help Extension agents and Master Gardeners diagnose the most common tree diseases and abiotic disorders in North Dakota. The cards contain diagnostic photos, host range, symptoms and signs, and management tips.

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Growing Houseplants

Houseplants Proper Care and Management of Pest Problems - PP744

This publication summarizes how to properly grow houseplants and control the insect and mite pests and diseases that infest houseplants. Pest identification, damage symptoms and pest management strategies are described for insect and mite pests and diseases.

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Growing Grapes in ND

Growing Grapes in North Dakota: A Guide for Home Gardeners and Hobby Growers - H1761

This publication guides home gardeners through the process of choosing an optimal site for planting, selecting hardy cultivars, and training and pruning the vines. In addition, his guide provides information on managing disease and insects that are common to North Dakota.

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Apple Scab in Crabapples

Managing Apple Scab in North Dakota Crabapples - PP1735

This publication will help identify and manage apple scab in home landscapes.

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Impatiens Downy Mildew

Impatiens Downy Mildew: A Threat to a Favorite Shade Plant - PP1702

Impatiens downy mildew was first detected in ND in 2013. Homeowners must be vigilant when purchasing and planting standard impatiens to prevent the spread of this disease across ND. This publication describes the signs and symptoms of the disease and offers alternatives to planting standard impatiens in the ornamental landscape.

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Two Needle Diseases of Spruce in ND

The Old and the New: Two Needle Diseases of Spruce in North Dakota - F1680

Spruce (Picea spp.) is commonly planted in urban and rural landscapes in North Dakota and frequently suffers from needle loss. In general, healthy spruce retain four or more age classes of needles. Premature needle loss of spruce is the result of a variety of causes: improper planting, environmental stress, insect pests and disease. Rhizosphaera needle cast and stigmina needle cast are two of the most common diseases associated with spruce needle loss in North Dakota.

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Dutch Elm Disease in ND

Dutch Elm Disease in North Dakota: A New Look - PP1635

Dutch elm disease (DED) has been spreading across North America since the 1920s. It first was reported in North Dakota in Mandan in 1969, and it reached eastern North Dakota by 1973. DED has been confirmed in every North Dakota county.

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horticulture in North Dakota: Seasonal Tidbits and Tips

Horticulture In North Dakota: Seasonal Tidbits and Tips - H1585

This publication contains the winter problems, early spring's activities, summertime care and concern and the fall into winter horticultural practices.

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