Jpr.] THE FORCING GARDEN. 703 



foundation of a disease of the most dangerous nature. Peaches, 

 of all trees, are the most sensible of external injuries ; and 

 when the shoots are injured by this, or any other cause, bleed- 

 ing ensues, and gum and canker follow. 



Water may now, as the fruit advances, be more liberally 

 supplied to their roots, but still (as remarked last month) with 

 due caution. The operations of the syringe should go on with 

 unremitting assiduity, to keep down that dreaded enemy the 

 red spider, and to refresh and nourish the leaves. Steaming 

 should also be attended to, for the same purpose. The green 

 fly, if the hints given last month be duly attended to, by once 

 or twice a week using a slight fumigation of tobacco, will be 

 kept entirely down. If it be once allowed to get a-head, it 

 will require three times the expense to subdue it, independently 

 of the injury done to the trees. 



The coccus sometimes makes its appearance, but (if not in 

 immoderate quantities) it is apparently injurious ; where, how- 

 ever, they can be removed, it is as well to do so, but their 

 final removal will take place when the trees are undergoing 

 their winter pruning and washing. The males of these in- 

 sects having wings, may be dislodged by the application of 

 water, thrown upon them with some force ; but as the females 

 are stationary, they can only be rubbed off with the finger, 

 or by similar means. 



■/ / PEACHES ON HOT WALLS. 



i 



Peaches are not unfrequently planted against hot walls, and 

 where properly managed, they cannot but be considered as 

 extremely useful, as forming that link of connexion between 

 the forcing-houses and the open walls, and thus ensuring the 

 ripening of the finer and later kinds of peaches and nectarines 

 in cold wet autumns, in .the most favourable situations, per- 

 fecting, at the same time, the earlier or middle-class of peaches 

 and nectarines, in situations where the climate is not suffi- 

 ciently congenial for their production without such assistance. 

 All garden-walls of southern aspects, should be built hollow, 

 or with flues, so that they can be used when occasion re- 

 quires ; and as there is no extra expense in the first erection. 



