Notice the $50.00 Christmas Trees at Stater's Brothers Market.
Perhaps those of you who will be purchasing these trees would donate them to a park project?
Trees that would provide a fruit or nut in addition to shade would be better for Public Spaces.
Pine trees, produce.... possibly a few pine nuts, pine needles, and fire wood.
Trees are trees... and this time of the year I doubt you'd be decorating an Apple Tree for Christmas. So If you Buy Live, donate it or plant it...