POT PLANTS. 247 



a narrow, low house, about the time the permanent vines 

 are started. The vines may be trained to wire trellises, 

 or three or four stakes may be placed in a pot around 

 the edges, and the vine arranged in a spiral form around 

 them. The pots should be mulched with half-decom- 

 posed manure, and after the fruit has set, liquid manure 

 should be used freely. The same general rules as to 

 pinching, watering, ventilating, etc., apply here, as 

 with vines permanently planted. 



If one does not have the means to erect a span roof, 

 or even a lean-to grapery of the usual width, very good 

 results can be obtained against the south side of a wall 

 or fence, by erecting a wall about two feet high and 

 three feet from the back wall, upon which common hot- 

 bed sash is placed upon end and leaning against the 

 back wall. If a wooden framework eighteen inches 

 wide is built out from the back wall to receive the sash, 

 ii will increase the size of the house and provide for 

 :'"' p ventilation. 



The most troublesome insect in the grapery is the 

 r^d spider, which can be kept in check by syringing. 

 It either of the mildews appear in a grapery, an appli- 

 ja on of the copper sulphate solution, or ammoniated 

 copper carbonate, should be used (See Chapter on Insects 

 and Diseases), or, if it is the powdery form, evaporated 

 sulphur will be found effectual. 



