Expanding the tree palette
By Elizabeth Peterson
Experts from near and far recommend options for diversifying — and strengthening — the urban canopy.
Tried-and-true trees punctuate the skies above cities and suburbs, lining streets and casting shade. But, too much of a good thing can cause problems. When there’s too many of just one tree variety planted, disease and/or insects can find a way to wreak havoc on whole groves.
