ROSES FOR THE GREENHOUSE 231 



be out before the outdoor roses. It would be well to 

 provide roller blinds to the greenhouse, so that the 

 plants may be shaded during bright sunshine in April 

 and May. After the second lot of flowers is over, put 

 the plants into a cold house or frame for a few days, or 

 if the end of May has arrived they may be put outdoors 

 at once. 



Late in June such as require it should be repotted, 

 but annual repotting is not necessary providing the 

 plants are well fed. Top dressing and liquid manure will 

 supply their needs and give much better results. 



Hybrid Perpetual roses are best placed outdoors after 

 the first blooms are over. All pot roses out of doors must 

 be watered, of course, and it is a good plan to plunge the 

 pots in soil. 



Roses planted out under glass would benefit greatly 

 if the roof of the house were removable. If this cannot 

 be done, then an abundance of air should be given dioring 

 summer. The plants need a period of rest, and this is 

 provided by withholding water for two or three weeks, 

 usually during August. 



Climbing roses under glass should be encouraged to 

 make as much growth as possible during early summer 

 in a warm, moist atmosphere ; in late summer and 

 autumn, coolness and an abundance of air are essential. 

 By September air should be freely given, so that the shoots 

 may become weU hardened by November. Any neces- 

 sary pruning is done in late spring after flowering, by 

 cutting away some of the old wood. Providing the roots 

 are in well-prepared soil, plenty of young growths will 



