|Image: Zelkova, no trunk flare|
Two weeks ago, "Dano" left a comment on our post about soils in cities which featured a photograph of a Zelkova that looked to be missing its trunk flare (also known as root flare). Last month, the American National Standards Institute completed a "major revision to ANSI A300 (part 6)-2012" which now includes a section on tree planting standards.
|Image: Correct tree planting dept, ANSI 300 part 6-2012 via TCIA (source)|
What do you think? Any Zelkova experts out there?
p.s. Edward Gilman, Dept. of Environmental Hort at the University of Florida has a fantastic Powerpoint about tree root growth after planting. Also, check out the Dirt Doctor's webpage on root flare management.