266 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



length. Some plants may have to be pruned a bit harder and some 

 less, but if possible get a good eye to prune to at this time of the year. 

 After pruning it is most important to be careful with the watering, as 

 of course there is practically nothing to water for a few weeks. If the 

 weather is at all sunny, full air should still be kept on during the day 

 and some also at night, but again everything will depend on the 

 weather. 



On sunny days a good syringing in the morning with clear water, 

 or with a httle soap or insecticide in the water, will do good and help 

 the plants to break, but it should not be done too late in the day, 

 certainly not after mid-day all through November. Fire heat will 

 probably not be required, as a temperature of 50° to 55° will be enough, 

 and if it should go below this no harm at all will be done yet. When 

 December comes the plants should have shoots from half an inch 

 to an inch long and they will now require fire heat to help them 

 along. 



Of course up till now they have been practically growing naturally, 

 but if let alone now they will soon stop growing and begin to rest for 

 the winter. Now is the time to commence giving them fire heat, and 

 the temperature should not fall below 50° to 55° at night during 

 ordinary weather. If the outside temperature should, however, become 

 very low, a temperature of 45° to 48° would not hurt at all, though 

 the plant would be somewhat slower in growing. If the temperature 

 should go much below 45°, say to 35° to 40°, the roses would prob- 

 ably stop growing for some Httle time and they would not flower 

 by early February, though even then, if they have not been kept at 

 too high a temperature earlier in the season, no harm would really come 

 to them beyond retarding the time of flowering. 



Air should be given every day if possible, but as the foliage 

 begins to grow it is most important that no cold draughts should strike 

 directly on to it. If cold draughts are allowed, mildew will probably 

 make its appearance in a day or so, and if allowed to get a firm hold it 

 will be a very difficult matter to get rid of it. 



In the matter of ventilation, trade growers will probably always have 

 the advantage over amateurs. It is so necessary to be always on the 

 watch for changes of wind and temperature, and unless some one is 

 on duty there is the chance of a sudden change in the weather upsetting 

 all the best-laid plans. As far as possible we keep our temperature 

 at about 55° to 60° during the day, and at 50° to 55° at night. During 

 this time of the year and right up to the end of March the ventilation 

 may require altering twenty times a day. Where it is impossible to 

 give due attention the best thing to do is to keep the plants on the 

 hardy side — that is, have plenty of ventilation and not too high a 

 temperature right from the start. 



If the roses are doing well they will not be troubled a great deal by 

 green fly or anything else in the way of insects, but they will probably 

 require fumigating with some nicotine preparation about once a month. 

 Do not wait until the attack is bad before fumigating, but have it done 



