CULTURE OF THE ROSE. 161 



grow nor bloom well. Under glass, every other day, and in some 

 cases twice a week is sufficient. 



The great principle to be borne in mind in forcing roses, is, that 

 sudden excitement is fatal, and that a plant should never be 

 taken from the open ground into a heated house without being 

 gradually prepared for it. This principle is particularly applica- 

 ble to deciduous roses. The Remontant and Bourbon, the Bengal 

 and its sub-classes, which grow and bloom through the whole 

 year, are not so liable to be injured by exciting treatment. 



Cuttings of these that are struck in the spring and planted out 

 in the open ground, may have their tops slightly pruned and 

 their buds all pinched off during the summer, to encourage the 

 formation of wood and of a close head. 



About the last days of summer or the first of autumn, they 

 can be taken up and placed in quart pots, with a soil com- 

 posed of one half loam, one quarter cow-dung, and one quarter 

 peat. After being slightly pruned and left in the shade for a 

 week, they can be placed in frames, protected at night from frost 

 and exposed to the air in mild weather, for some two months, 

 when they can be removed, a few at a time, into the green-house, 

 and subjected to a moderately increased temperature. They will 

 soon bloom well, and will succeed each other throughout the 

 winter and spring, until roses bloom in the open air. Like the 

 deciduous roses, they require to be protected against the green-fly 

 by syringing, and if that does not answer, by fumigation with 

 tobacco. 



The Bengal, however, like the deciduous roses will bloom bet- 

 ter the second winter than the first, by shifting them into larger 

 pots, pruning them, cutting off all the flower-buds, and giving them 

 very little water the latter part of summer. They can then 

 be put into the fi'ames and treated as before. The Bengal Rose 

 is very easily forced in this way, and if the temperature is at first 

 kept during the day at 45° and gradually increased to 60°, there 

 can be little difficulty in obtaining beautiful and healthy plants. 

 This temperature can be obtained in any green-house or vinery. 

 The latter are becoming more common, and when they are pro- 



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