20 



GREENHOUSE MANAGEMENT. 



the insects and the germs of the diseases. Nearly as 

 good results can he obtained, however, without injury 

 to the plants, if the sulphur is slow ] y evaporated over 

 an oil stove. 



STAKING AND TRELLISING. 



When the plants have been in the beds for six weeks 

 or two months, the growth will generally be sufficient 

 to require staking. Most growers still tie with raffia to 

 stakes of wood or bamboo, and by an occasional re-tying 

 keep the shoots in place. The use of wire is, however, 



iljiilf! 



FIG. 3. WIRE TKBLLIS FOR ROSES. 



becoming quite common, and rose growers have devised 

 a variety of trellises for the purpose. One of the siin 

 plest of these consists of a No. 12 wire stretched about 

 three feet above the bed over each row of plants (Fig. 2), 

 to support stakes of No. 6 or No. 8 wire, to which the 

 plants can be tied. Sometimes another wire is run 

 lengthwise of the house along each row of plants, near 

 the soil, and a smaller wire, fastened to this at the bot- 

 tom and to the other wire at the top, can be used as a 

 support for each plant. Still a third method is to run 



