WOODY PLANTS FOR NEW ENGLAND 47 



a slow-growing, densely pyramidal plant with its lower branches, in large 

 specimens, resting on the ground. Var. glauca, which may be picked out 

 of almost any lot of seedlings, develops into an agreeable blue spruce which is 

 generally considered to be more pleasing than the far too common blue form 

 of P. pungens. 



PICEA GLAUCA (P. alba) (P. canadensis) White Spruce 



A native northern, large spruce which has bluish aromatic foliage. In culti- 

 vation it shows compact habit in much younger plants than does the commonly 

 planted foreign P. Abies, and is thus more suitable for tubs and window boxes. 

 It remains in maturity a well-furnished pyramidal tree which can withstand 

 varying soil conditions. Also, it stands up under repeated pruning when 

 used as material for tall hedges. Var. Conica, Dwarf Alberta Spruce, is 

 a slow-growing, dense, regular-shaped, pyramidal tree with soft bluish-green 

 or bright-green foliage, which will, in time, grow many feet in height and retain 

 its symmetry if protected from infestation of red spider mite and not so located 

 as to be burned by the sun and wind of late winter. A plant of value only in 

 the rock garden or under special circumstances for hedge making. 



PICEA GLEHNII SaGHALIN SpRUCE 



In cultivation, a slow-growing, narrow, pyramidal tree with small, shining, 

 dark-green foliage. It is suggested here as a possible hardier substitute for 

 P. orientalis in exposed situations. 



PICEA KOYAMAI KOYAMAI SpRUCE 



A recently introduced, narrow, pyramidal tree growing to some sixty feet 

 in height. In general aspect it very nearly resembles P. Abies and is rapidly 

 coming to be considered as a substitute for the type of that species. 



PICEA OMORIKA Serbian Spruce 



If planted in rich, well-drained soil, this Balkan tree will grow to a height 

 of sixty to one hundred feet, retaining its narrow pyramidal habit. The 

 foliage, with parts of both surfaces exposed because of the upright and spread- 

 ing nature of the branching, gives a distinctly two-toned effect of white and 

 green. Rated as one of the most beautiful of all spruces. 



PICEA ORIENTALIS ORIENTAL SpRUCE 



In cultivation, this plant is of relatively slow growth for the first thirty or 

 forty years, and usually appears in gardens as a broad-based tree, the numerous 

 branches of which turn up at the ends to form a somewhat tapering column. 

 It is hardy if given a soil which does not dry out in winter and if so located 

 that the short, shining, dark-green leaves are not given full exposure to winter 

 sun and wind. In its native site it grows to be as high as one hundred and 

 fifty feet. 



Picea pungens COLORADO SpRUCE 



The type is the green-leaved Colorado spruce which has been so much 

 overplanted. There is very little to recommend it except that it seems to be 

 very durable near salt water. In cultivation, both the type and its varieties 

 very often lose their lower branches through attack of a canker-forming fungus 

 for which, as yet, no curative measures have been discovered. This species 

 breaks into a number of color forms and varieties displaying differences of 

 habit. Var. argentea is the silver form which is distributed through the 

 trade as Koster's Spruce. Under this name, also, have been distributed a 

 great many indifferent seedlings. The true variety Kosteriana is a weeping 

 form with bluish foliage. All of these blue forms of spruce are, because of 



