Resources

The Science of Shearing

Published on August 12, 2025
In this article, Bert Cregg discusses some of the basic biology and underlying principles that guide the response of conifers to shearing.
Assessing Sites for Christmas Tree Production Using Web Soil Survey

Published on August 12, 2025
This article discusses the use of the Web Soil Survey tool produced by the USDA NRCS as it provides Christmas tree growers with a free, powerful, easy to use online program for gaining critical information on soil on their sites.
16th International Christmas Tree Research and Extension Conference held in Denmark

Published on August 12, 2025
This article explains the importance of understanding herbicide modes and sites of action for effective weed control in Christmas tree production, helping growers select, rotate and apply herbicides to prevent resistance and maximize efficacy
Tree Diseases and Management Series for Christmas Tree Production: Biology and Management of Needlecast Diseases for Christmas Tree Production

Published on August 12, 2025
Devkota’s article reviews needlecast diseases in Christmas tree production along with treatment options.
Year in Review: 2024 Christmas Tree Sales Recap

Published on August 12, 2025
This article shares the results of an end-of-the-season sales survey that aimed to identify key trends in Christmas tree sales across the Great Lakes region.
Non-chemical Weed Control in Christmas Tree Production

Published on August 12, 2025
This article outlines non-chemical weed control strategies in Christmas tree production, including prevention, cultivation, mulching, cover crops, thermal control and biological methods.
Understanding Herbicide Modes of Action

Published on August 12, 2025
This article explains how understanding herbicide modes and sites of action helps growers select and rotate herbicides effectively to manage weeds and avoid resistance.
Biology and Management of Common Lambsquarters (Chenopodium album) in Christmas Tree Production

Published on August 12, 2025
This article details the biology of common lambsquarters and offers integrated control methods for Christmas tree growers, including cultural, chemical, and mechanical strategies.
Managing Phytophthora Root Rot

Published on August 12, 2025
In this article, Bill Lindberg and Gary Chastagner examine the pathogen’s life cycle, factors that contribute to its development and spread, and potential management steps to mitigate PRR development.
Hoary Alyssum: Small But Hazardous to Horses

Published on June 25, 2025
This bulletin explains how to identify living and dried hoary alyssum, why the plant is a problem for horses and other equine species, and offers strategies for managing hoary alyssum in pastures, hayfields, turfgrass and Christmas tree stands.