My friend (and noted author), Kathryn Galbraith, explained the importance of trees to community in her beautiful new picture book for children, Arbor Day Square.  I am fortunate to be surrounded by woodland here in Heath, but as a new member of the Bridge of Flowers committee I have been more and more aware of how healthy street trees, some of them quite new, add to the quality of life in a small town like Shelburne Falls, but…