1870.] CULTURE OF THE ROSE IN POTS. 313 



that can accommodate themselves with more facility to conditions so 

 opposite to those of their native homes. A. deltoidea is a native of 

 the Levant. 



THE CULTURE OF THE ROSE IN POTS. 



{Continued from page 110.) 



At the close of my last communication I had reached that stage of my 

 process of culture where the Roses gave a promise of a fine bloom. 

 Since then, the fulness of the promise has been more than realised, and 

 beautiful and massive blooms have rewarded my labours, crowning a 

 healthy and vigorous foliage. 



There are two things with which the cultivator has to grapple in the 

 course of his treatment — viz., mildew and insects. The Rose, when 

 grown under glass, is much more liable to the attacks of these, and 

 much more likely to be injuriously affected by them, than when grown 

 in the open air. In the course of one night I have observed mildew 

 spread out into mealy patches on leaves that the day before were a 

 polished green. Sulphur dusted over the parts affected will arrest its 

 farther progress when applied in time ; but should an application of 

 this kind be neglected, if only for a day or two, one need not be sur- 

 prised should every plant in the house become affected by it. Soot 

 has been recommended as an effectual cure, but I cannot attest to its 

 curative properties, never having tried it ; and I object to its use on 

 account of its being a rather unwelcome introduction to a house painted 

 white, which I have a pride in keeping clean. 



The Rose-maggot has also sorely affected my Roses this season, in 

 some instances causing some of my most promising plants to be nearly 

 bereft of flowers, as this pest drills its way into the heart of the buds, 

 causing them to fall off. It is first discovered lodged in the folds of 

 the half-expanded leaves, and, on close examination, these will be found 

 to be apparently bound together in pairs, by means of the maggot eat- 

 ing its way through them, and so sewing them together, as it were, by 

 means of a fine capillary thread, which passes from the maggot in a 

 way something similar to that observed in the case of the spider. The 

 maggot is an incessant worker, and pursues its avocation until the 

 leaves it inhabits are riddled with holes. 



Various are the antidotes recommended for the purpose of staying 

 the ravages of this pest. The following I consider most effectual : — 

 Take of powdered sulphur \ lb. ; of unslaked lime, finely pounded, 2 

 lb. 1 and tobacco liquor, formed by steeping some tobacco in hot water, 



