232 



THE CANADIAN HORTICULTURIST. 



Fig. 1826. Charles X Lilac, at Central 

 Experimental Farm. 



omical formula will not be available for 

 some weeks yet, we feel confident that 

 spraying trees in the autumn when the trees 

 are dormant, with a lime mixture, will prove 

 the best, simplest and cheapest remedy for 

 the oyster shell bark louse yet known. 



The latter part of May and the first half 

 of June is the season during which most of 

 the flowering shrubs are at their best. At 

 the Experimental Farm there is a collection 

 of more than one hundred species and va- 

 rieties of lilacs alone. These begin bloom- 

 ing during the third week of May, and there 

 is a succession of these beautiful and popular 

 flowers from that time until the end of June. 

 In the Canadian Horticulturist for May, 

 1899, there is an article by Mr. Wm. Saun- 

 ders, in which descriptions are given of 



some of the best of these, also of those 

 which are required if a succession of bloom 

 is desired. The double and single varieties 

 and the dark and delicately tinted purple 

 ones are especially fine. 



One of the best hardy spiraeas is com- 

 paratively new species called Sarguta. This 

 is a very early flowering sort, being in bloom 

 about the same time as Spircea Thuubergii, 

 but is hardier than that species and of more 

 graceful habit. Following this is Spircea 

 Von Houitii, which is a beautiful shrub of 

 pendulous form bearing a profusion of dainty 

 white flowers. Although this shrub is being 

 more extensively planted, it will probably 

 be a long time before there are too many of 

 them. The Japanese quince, which bears a 

 profusion of bright red flowers, is one of the 

 best flowering shrubs where it can be grown 

 successfully, but at Ottawa it is not very 

 satisfactory, as the wood is not perfectly 

 hardy and the flower buds are winter-killed 

 to within a short distance of the ground 

 every year. There is another species called 

 Pyrus {Cydonid) Maulei, the flowers of which 

 are also fine, which is quite hardy at Ottawa, 

 the flower buds and the wood being seldom 

 injured by winter. It is one of the most de- 

 sirable of the shrubs which bloom in May. 



The following is a list of some of the best 

 perennials which bloom in June : 



Alum-root {Heuchera sanguined) ; German 

 Iris {^Iris germanica) ; Oriental poppy {Pa- 

 paver orientale) ; Oris root {Iris florentind) ; 

 Gas plant [Dictamnus albus purpureus)[Frax- 

 inelld) ; Jacob's Ladder [Polemoniuni coeru- 

 leum) ; Double flowered Dropwort [Spircea 

 Filipendula fl. pi.) ; Large flowered Gail- 

 lardia {Gillardia aristata grandiflora) ; Dou- 

 ble Sneezewort {Achillea Piarmicafl. pi.) ; 

 Lance-leaved Tickseed {Coreopsis lanceolatd); 

 Yellow Day Lily {H enter ocallis fiava) ; Du- 

 mortier's Day \J\\y{Hemerocallis Dumortierit). 



W. T. Macoun, 

 Central Exp'l Farm, Horticulturist. 



Ottawa. 



