64 FAMILIAS GARDMN FLOWERS. 



roses are somewhat decisive in their behaviour, and die 

 if they find life not agreeable to them. The best pre- 

 ventive and the best eradicator of the green fly is water, 

 which should be applied to the roots to promote vigorous 

 growth, and overhead in frequent copious showers to 

 wash the fly out of existence. Tobacco-powder is a 

 very cleanly and effectual fly-killer, as it needs only to 

 be dusted on the young leaves and shoots, and may soon 

 afterwards be washed off by means of the syringe. 



Roses should be planted in the autumn and winter. 

 If the work cannot be done until spring, the roots, 

 when planted, should be mulched over with a good body 

 of half-rotten stable-manure, and during the months of 

 May and June following they should be aided with water 

 overhead and at the roots. If dwarf roses can be pur- 

 chased in pots, they may be planted in April and i\Iay. 



