9 2 OHIO EXPERIMENT STATION: BULLETIN 190 



spruce, and a place should be found for at least one specimen on every lawn in 

 Ohio. A tree of so unusual and striking a color as this should never be planted 

 in masses, but instead used as a solitary specimen or in very small groups. 

 When associated with other evergreens it would best be used sparingly, serving 

 for accent as it were. The habit of this tree is to put out its branches, which 

 are covered with erect, sharp-pointed needles, in. a somewhat stiff, horizontal 

 manner. Even in its native home the blue spruce does hot retain the character- 

 istic shade of blueness after it is forty years old, but that period of daily satis- 

 faction and enjoyment will abundantly justify any one for planting it. 



Koster's Blue Spruce. Picea parry ana glauca (forma} Kosteriana. This is 

 but the Colorado blue spruce grafted with wood from trees of the finest color, 

 hence a prospective planter can make no mistake in purchasing the grafted sort, 

 although they are slightly more expensive. 



Weeping Blue Spruce. Picea parryana glauca-pendula (forma') Kosteriana* 

 In this variety we have combined the gracefully pendulous habit of the weeping 

 Norway spruce and the highly colored foliage of the Colorado blue, the result 

 being a weeping tree of even greater worth than the weeping Norway. 



Engelmann's Spruce. Picea Engelmanni Engelm. Engelmann's spruce is 

 another good tree which has come to us from the Rocky Mountains. The foliage 

 of this species is ill-smelling and has some of the blue tints of the Colorado blue, 

 but the needles are softer and much more pliant, the sharp, piercing character 

 being wholly lacking. It is entirely hardy and attains a height at maturity 

 ranging from one hundred to one hundred and fifty feet. While it has not been 

 extensively planted in Ohio it seems to be a desirable and promising species 

 and worthy of much more general use. Engelmann's spruce is not a rapid 

 grower. 



American Hemlock ( Tsuga Canadensis Carr), considered by many to be one of 

 the most beautiful evergreens, is native to a region extending from Nova Scotia 

 to Wisconsin and along the Appalachian mountains from North Carolina north- 

 ward through Canada. In Canada and northern United States vast forests of 

 hemlock are found, the trees seeming to stand the conditions of a northern region 

 better than the heat and drought of a more southerly locality. It often becomes 

 a tree 70 to 80 feet in height and solitary specimens hold their branches well to 

 the ground, but as often found in forests a large portion of the trunk is bare 

 For ornamental and decorative purposes the hemlock has been much used and 

 the grace with which it carries its light, feathery, drooping branches makes it 

 indispensable. The tree is a symmetrical one, without rigid formality, clad in 

 foliage of dark, yet lively and cheerful, shade of green. While seen at its best 

 when grown as an individual specimen, the hemlock also harmonizes well with 

 other trees. It bears shearing well and has been much used in the formation of 

 hedges, a good hemlock hedge being unsurpassed in beauty by that of any other 

 evergreen. 



Douglas Fir. Pseudotsuga taxifolia (Lamb.) Britt. By some this is also called 

 Douglas spruce. This important timber tree grows along the Pacific coast from 

 Mexico through the Rocky Mountain Region to southern Canada, being found at 

 its greatest perfection in the territory around Puget Sound, where trees three 

 hundred feet in diameter are not uncommon. As an ornamental it is a dark- 

 colored, very rich looking tree of graceful habit, and it is being used extensively 

 in forestry on account of its rapid rate of growth and hardiness. Owing to its 

 extremely large size it should be planted where it may ultimately have unre- 

 stricted space in which to grow. 



