BEGINNER'S GUIDE TO ROSE GROWING 33 



these Rambler Roses in water, as it would be too late in the year for 

 this method of rooting them. They would strike very well in water 

 the same as Tea Roses, but you would need to put the cuttings in 

 in July in the greenhouse. 



Spraying Roses for Mildew 



Q. My Roses are now (September) covered with mildew. What 

 can I do to cure them ? S. E. T., Reading. 



A. Towards the end of summer, when the leaves of Roses are 

 white with mildew, people are anxious to know what they can do to 

 check the disease ; but it is then too late to save the plants from 

 disfigurement. The white part seen on the leaves is the fruiting 

 stage of the fungus, which has already been on the plant for 

 a considerable period. If, however, preventive measures are taken 

 early in the year, the fungus does not obtain a firm footing. An ex- 

 cellent time to spray for mildew is early spring, just as growth is 

 commencing. The spraying ought to be done twice or thrice, at 

 intervals of a fortnight. Bordeaux mixture is one of the most 

 suitable preparations to use. It can be prepared as follows : 

 Dissolve 3 Ib. of copper sulphate in warm water, placing the 

 mixture in a barrel holding 22 gallons. In another vessel slake 

 2 Ib. of fresh burnt lime, and make to the consistency of a creamy 

 whitewash ; then strain through canvas into the barrel of sulphate 

 solution, make up to 22 gallons with water, stir well, and apply as a 

 fine spray to every part of the branches. If this spraying is per- 

 severed with, very little mildew will appear later in the year. 



Climbing Roses for Unheated Greenhouse 



Q. Please name the best six climbing Roses for small, sunny, 

 unheated greenhouse. H. E. J., Walthamstoiv. 



A . The following are six good climbers for this purpose ; Bouquet 

 d'Or, Cheshunt Hybrid, W. A. Richardson, Francois Crousse, Climb- 

 ing C. Testout, Climbing Frau Karl Druschki. 



Climbing Roses for Heated Greenhouse 



Q. I am about to plant two climbing Roses in my conservatory to 

 cover the wall. The house is a leanto, facing north-east, the floor 

 bricked. Would it be best to take up a few bricks and plant in the 

 earth or plant in tubs 1 The sorts I intend planting are Niphetos and 

 Marechal Niel. Please tell me how to treat them. Scale^ Witter- 

 sham. 

 D 



