Title: Effect or root pruning and planting depth on tree health, root form, and stability

Summary: Six studies were performed over the past 7 years evaluating the effects of various root pruning and planting strategies on tree health and stability. In general, root pruning or slicing at planting or when upsizing to larger containers did not affect tree growth or stability. Root pruning during container production reduced culls and improved root form. Plant depth did not appear to affect tree stability. However, the effects of planting depth on tree growth varied among studies. Trees planted deeply in containers had more root defects and require more time and effort to correct problems prior to planting. When correcting these defects, some trees underwent severe root removal with no apparent impact on growth in the landscape.

Edward F Gilman, Ph.D., Associate Professor, U of FL - Env Hort, Environmental Horticulture Department, Gainesville, FL, United States

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