Wednesday’s morning learning seminar at New England GROWS, the three-day green industry conference & expo held at the Boston Convention & Exhibition Center, dealt with the topic of tree reduction. Specifically, the seminar highlighted differences between retrenchment and topping and why they matter for arborists.

Ed Gilman, Ph.D, professor of urban trees & landscape plants at the University of Florida, was the seminar’s speaker and moderator. Highlighted points of Gilman’s seminar included:

  • Tree reduction is normal, however thinning is not a normal condition.
  • Proper ways to restore topped trees, including the method of picking out a leader from each of the cut stems and cutting back everything else.
  • The ideas of reducing, removing and retaining branches.
  • Over the last few years, there has been quite a bit of discussion about retrenchment pruning but not many definitions or parameters.
  • It’s important to understand the science behind pruning techniques and their impact on survivability.

Check back for more arborist-centric coverage of New England GROWS over the next two days.

View the New England Grows 2015 Photo Gallery or read more about other informative seminars at the show on tree reduction or structural pruning.