CULTURE UNDER GLASS 85 



tional warmth prevents the falling of the 

 buds and encourages brighter colors. 



After the plants have reached the height 

 of about six inches they should be given 

 something to climb on. The best and 

 cheapest way is to run one wire on the bot- 

 tom and another from eight to ten feet 

 above each row, connecting these two 

 wires with strings as is done in the grow- 

 ing of smilax. Strings should also be run 

 lengthwise of the row, about every ten 

 inches, as the plants advance in growth. 

 At the same time it is well, occasionally, 

 to help the vines to climb on the strings. 

 The upper wire must be the strongest, for 

 when the sweet peas are in full bloom they 

 are usually ten feet high, and the vines of 

 one row one hundred feet long will weigh 

 over a ton. If at any time the upper wire 

 should break, all the flowers become 

 bruised, crooked, and of very little value. 



