THE CANADIAN HORTICULTURIST. 1(.»1 



of tlie leaf and use it as an umbrella to shield themselves com- 

 pletely from the shower. The only way of reaching them is with a 

 garden syringe. At one time it seemed as though the hellebore in 

 water applied to them in this way, when they were quite young, was 

 effectual in killing them, but later experiments have suggested the 

 question whether they were not washed off by the force of the shower 

 thus directed against them, and were unable in that early stage of life 

 to find their way back again. If the latter be the correct solution, there 

 need be neither hellebore nor tobacco in the water. The Eose-bug, 

 macrodactylus suhspinosa, feeds on the leaves, and when numerous are 

 very destructive. Thus far the writer has never been troubled with 

 this insect. They pass the larvfe state in the ground, and come out 

 in the month of June as perfect beetles, remaining about a month to 

 cany on their destructive work. The only certain method of combat- 

 ting them, known to the writer, is that of gathering them by hand and 

 crushing, burning, or scalding them. They are perfectly proof against 

 whale-oil-soap and decoctions of tobacco ; whether they can digest 

 hellebore is not known, but probably they would succumb to paris-green. 

 Should they not appear in too great numbers it would not be a difficult 

 task to pick them off by hand, for they are very sluggish creatures, and 

 easily caught. 



Having given these hints on the cultivation of roses and tlie means 

 of preventing the ravages of these insect enemies, we have but a few 

 words to say concerning the difterent varieties. These all naturally 

 fall under four heads, the summer, autimmal, climbing, and monthly 

 ros6s. By summer, is meant those hardy kinds which bloom in the 

 early summer only; the autumnal sorts not only bloom in the early 

 summer, but also again more or less in the autumn. These are also 

 called Hybrid Perpetuals, and Kemontants. They are indeed hybrids, 

 but the term perpetual is only calculated to mislead, fur they do not 

 bloom perpetually, and many of them give but few autumn flowers. 



By climbing, is meant those hardy, free-growing, rambling varieties 

 which can be trained to climb over a trellis or cover the side of the 

 house or verandah. It is not intended to embrace those tender climbers, 

 such as climbing Devoniensis or Marechal Niel, which can be grown 

 only in the house, and are grouped under the head of montldy roses, 

 which includes tliose known as Ijourbon, Tea, and China Koses, which 

 bloom almost constantly during their growing season. 



