REPORT OF THE HORTICULTURIST 



131 



SESSIONAL PAPER No. 16 



The trees in the ahove table which have not made satisfactory growth owing to 

 unsuitability of soil and other causes are Black Walnut, Butternut, White Elm, and 

 Norway F -uce. Under better conditions these trees would have made much more 

 growth. 



During the autumn of 1901 the following additions were made to the trees in 

 the forest belt along the western boundary. These were planted to replace other 

 kinds which had not succeeded. The trees and shrubs were planted 2 \ feet apart 

 each way, the object being to get the ground shaded as soon as possible, in order that 

 weeds would be killed, moisture conserved and the soil kept from baking without hav- 

 ing to cultivate. There was also the important object of making the permanent trees 

 shoot up straight without side branches. Necessarily, the great majority of the trees 

 and shrubs planted were for this purpose. 



Name. 



White Ash [Fraxinus americana) 



Tamarac {Larix americana) 



White Spruce (Picea alba) 



Box Elder {Acer ncgundo) 



Alder Buckthorn (Rhamnus Frangula) . . 

 Ninebark {Neillia opulifolia) 



Rosemary Willow (Salix rosmarinifolia) 



Total 



Height when 

 planted. 



4 feet. 

 3 „ 

 2 „ 



2-year-old tree cut back to 



ground. 

 6 inches. 

 2-year-old shrubs cut back to 



ground. 

 Unrooted cuttings. 



In addition to these there were Black Walnut, White Pine, Hard Maple, Rose- 

 mary Willow, Sand Cherry, and White Ash used to complete the plantations begun 

 in 1899. 



ARBORETUM AND BOTANIC GARDEN. 



Comparatively little is known of the Arboretum and Botanic Garden at the Cen- 

 tral Experimental Earm, except by those who have visited Ottawa and seen it. 

 When the farm was purchased, in 1886, sixty-five acres were selected for that purpose, 

 and planting was begun in the autumn of 1889. Most of the land is high, and a fine 

 view is obtained of the city of Ottawa on the north and east, while to the south there 

 is a pleasing view across country with glimpses of the Rideau river in the distance. 

 The Arboretum is bounded on one side by the Bideau canal, which at this point has 

 marshy banks which take away much of the sameness which the canal would other- 

 wise have, and also afford a splendid opportunity for experiments with aquatics, 

 though little has yet been done in this direction. 



Twelve years ago, when the first planting was made, comparatively little was 

 known of the hardiness of a large number of trees, shrubs and herbaceous plants, as 

 the number of species and varieties found in gardens was limited, but now 

 3,728 kinds of trees and shrubs, and over 1,600 perennials have been tested and 

 notes taken on all of them. Tbe number of individual specimens of trees and shrubs 

 living in the Arboretum at the present time is more than 4,200. This large collection 

 has been obtained from many sources. From donations of seeds from botanic gar- 

 dens throughout the world a large number of species and varieties have been grown, 

 the Royal Gardens, Kew, supplying many of them. The catalogues of nurserymen in 

 America, Europe, and Asia have been searched to increase the collection until it ia 

 now difficult to obtain additional species of many genera, 



16— 9J 



