260 EXPERIMENTAL FARMS. 



90. Picea alba. — White spruce (Canada). Height, 30 to 50 feet. A very beautiful 

 native species with glaucous green leaves and rather rigid branches but making a fine 

 ornamental tree. 



*91. Picea alcockiana. — Alcock's spruce (Japan). Height, 40 to 60 feet. This is 

 a very ornamental Japanese species, and quite distinct from all others. The dark green 

 of the upper part of the leaves, and the bluish silvery green of the lower surface, make 

 it very attractive. 



*92. Picea excelsa. — Norway spruce (Europe). Height, 50 to 75 feet. The Nor- 

 way spruce is one of the most popular evergreens planted, being a very rapid grower, of 

 graceful form, and doing well on a great variety of soils. 



*93. Picea pungens glauca. — Rocky mountain blue spruce (Western United States). 

 Height, 40 to 60 feet. A very beautiful species with steely blue coloured leaves. One 

 of the most ornamental trees. It is a slow grower and takes some years before it 

 attains much height. As this tree varies in colour from green to blue, in procuring 

 young trees, the blue variety should be ordered. 



94. Pseudotsuga Douglasii. — Douglas fir (British Columbia). Height, 50 to 75 feet. 

 The Douglas fir is a very majestic and handsome tree, with foliage dark green above 

 and silvery beneath. The seed or young trees should be obtained from as far north as 

 possible, or high up on the mountains, as otherwise it is not likely to prove hardy. 



*95. Thuya occidentalis aurea Douglasii. — Douglas' golden arbor-vitse (United 

 States). This is a very beautiful form with bright golden coloured foliage and upright 

 habit. 



96. Thuya occidentalis compacta. — Compact arbor-vitse (United States). A dwarf 

 compact variety with bright green foliage. 



97. Thuya occidentalis Ellwangeriana. — Ellwanger's arbor-vitse (United States). 

 This is a fine, compact, dwarf, vigorous variety, with slender leaves and branches. 



*98. Thuya occidentalis Hoveyi. — Hovey's arbor-vitse (United States). This is one 

 of the finest and most desirable varieties. The leaves are bright green and the branches 

 flat and parallel, giving the shrub a very remarkable and attractive appearance. 



99. Thuya occidentalis pyramidalis. — Pyramidal arbor-vitse (United States). The 

 pyramidal arbor-vitse is a very compact upright grower, and its columnar form makes it 

 one of the most conspicuous objects on the grounds. 



100. Thtiya occidentalis wareana (Sibirica). — Siberian arbor-vitse (Europe). The 

 Siberian arbor-vitae is a well known compact form with deep green, blunt leaves, which 

 keep their colour well in winter. 



PERENNIALS. 



No flower garden is complete without perennials. Even though the plot of ground 

 be small, some of the precious space should be allotted to a fe-.v of the finest examples 

 of this large and varied class of plants. Few flowers require as little care as perennials 

 if given the proper conditions to start with. The soil should be a good loam, well 

 drained, for thorough draining is very essential. When planted, they should be left 

 undisturbed as long as possible, hence the soil must be well prepared by trenching, with 

 a liberal supply of well rotted cow manure, dug under. Most perennials thrive best in 

 full sunshine, and, where it is possible, they should be planted where they will get the 

 most favourable conditions. A southern aspect is the most suitable, and where there is 

 protection from the cold winds the plants do best. Planting may be done either in 

 spring or fall but September is probably the best time to plant perennials. Throughout 



