THE BLUE SPRUCE.
P. Parryana, Sarg.
The blue spruce well known in Eastern lawns as the "Colorado blue spruce," is a crisp-looking, handsome tree, broadly pyramidal, with rigid branches and stout horny pointed leaves, blue-green to silvery white, exceeding an inch in length. At home on the mountains of Colorado, Utah and Wyoming, it reaches a hundred to a hundred and fifty feet in height and a trunk diameter of three feet, and becomes thin and ragged at maturity. The same fate
overtakes the trim little lawn trees, so perfect in color and symmetry for a few years.