ROSES UNDER GLASS. 151 



Take those giants in t'he trade, Chas. P. Kinnell 

 and Co., Ltd. This firm send out a greenhouse boiler 

 called The Silver Medal " Horse Shoe " Boiler, which 

 burns for 20 hours without attention. They have sold 

 38,000 to date — a proof of its value and efhciency. Or 

 take that wonderful boiler for glass houses sent out by 

 the Twelve-Hours' Stove Syndicate, Ltd., from which 

 the firm takes its name. You cannot want a better, 

 unless it be for the growing of Roses on a large scale, 

 when both t'hese firms can supply all you require, 

 according to the size of your house. 



I do not intend to write at length on ihouse or 

 boiler construction, for the firms mentioned will 

 supply all the details a grower requires; but before 

 considering the culture of the Rose under glass, I 

 wish to impress the Rosarian with the facts that half 

 the causes of failure arise out of faulty houses or bad 

 heating. Given the best, you will have little trouble 

 and great pleasure ; given the worst, Rose-growing 

 under glass is a source of anxiety, for the bad ventila- 

 tion of an ill-constructed house, together with sudden 

 falls and rises in temperature, is the cause of mildew, 

 and checked growth is the sure precursor of aphis and 

 other pests. 



It has been often said '* bad workmen complain 

 of their tools,'* but this saying does not hold good in 

 horticulture, for a bad tool is useless; indeed, it is to- 

 day a waste of time and a most expensive luxury. 



Given a good house, no matter how small, or a 

 good pit-frame, let us start with the forcing of Roses 

 under glass by considering the cultivation of Roses in 

 pots. 



Here I lay down the law to all Rose growers that, 

 if they desire to possess a Rose garden complete in 

 every respect, they must pot up a few trees, be it only 

 to grow the same potted up in the open, for the re- 

 placing of failures of trees planted out in the open. -A. 

 loss can so easily be replaced late in the year from 

 pot trees, and also there is very little trouble incurred 



