Morton Chicago planted street-tree age reference table

Nine species attributed to Dwyer2010 Chicago-suburb planted street-tree data in Morton Arboretum educational material. Uses single-trunk diameter4.5ft above ground;excludes forks/large branches at that point. Individual/site variation prevents exact aging. Intermediate diameters show adjacent table cells without interpolation/extrapolation or confidence-interval interpretation. Not generalized to other regions or wild forests.