POTTING AND FORCING. 107 



against the green-fly by syringing, and if that docs not 

 answer, by fumigation with tobacco. 



The Bengal, however, like the deciduous roses, will 

 "blooni better the second winter than the first, by shifting 

 them into larger pots, pruning them, cutting ofi* all the 

 flower-buds, and giving them very little water the latter 

 part of summer. They can then be put into the frames, 

 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 is becoming more 

 common, and when it is provided with heating appa- 

 ratus, there can be nothing better for roses. We have 

 forced them very successfully in one of our own vineries, 

 one hundred and twenty feet long, twelve feet wide, ten 

 feet high in the rear, three and a half in front, and heat- 

 ed by hot water. But as there may be many who desire 

 a cheaper structure, we will give the description of one 

 used by Rivers, (the best rose-grower known), with his 

 mode of managing roses in a structure of that character. 

 " A pit, ten or twelve feet long, and eight feet wide, just 

 high enough to stand upright in, with a door at one end, 

 and a sunken path in the centre, a raised bed on each side 

 of the path, and an 18-inch Amott's stove at the farther 

 end, opposite to the door, with a pipe leading into a small 

 brick chimney outside, (a cliimney is indispensable), will 

 give a great al)undance of forced roses from February to 

 the end of May. To ensure this, a supply must be kept 

 ready, so that, say twenty may be placed in the forcing 

 pit about the middle of December, a like number i;i the 

 mi<ldle of January, and the same about the middle of 

 February ; tiiey must not be pruned till taken into the 

 house, when each shoot should be cut back to two or three 

 buds for the formation of strong shoots. The fire should 



