Dr. Bert Cregg

Dr. Bert Cregg

Dr. Bert Cregg is a Professor of Horticulture and Forestry at Michigan State University. He holds a doctorate in Tree Physiology from the University of Georgia. Dr. Cregg conducts research and extension programs on physiology and management of trees in landscapes and nursery and Christmas tree production.

Michigan State University

Long-term Implications of Remediating Roots of Container-grown Trees at Planting

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Container-grown trees continue to increase in popularity due to their light weight and ease of handling. However, the effects of circling roots on tree health and establishment are a major concern when planting container-grown trees. Since 2012, personnel in my lab have conducted a series of trials to determine the impact of various approaches to mitigating circling roots at planting including slicing, shaving, and even bare-rooting.