194 Gardening Under Glass 



four-inch material and nail on edge from top to 

 bottom on the inside, spaced about four feet 

 apart, after which line the inside with roofing 

 or other matched boards. Thus, a space four 

 inches will be formed all around the frame which 

 should be filled with dry leaves. By this method 

 flowers may be had all winter. 



Heating 



In placing heating pipes in a violet frame, the 

 return pipes should be placed at the front of the 

 bed with a board stood on edge between the 

 pipes and plants to act as a shield, as the heat 

 coming in direct contact with the plants would 

 cause red spider. As far as possible, hot water 

 should be used for heating. 



Short stems are the result of either keeping the 

 plants too warm or too dry at the roots. 



At all times, after the plants are planted and 

 in good growth, keep the atmosphere buoyant, as 

 Violets are cool-loving plants, and a humid at- 

 mosphere invites disease and consequent dis- 

 appointment. This is one of the most important 

 parts of success in violet growing. 



Varieties: Single — California and Prince of 

 Wales; Double — Lady Hume Campbell and 

 Marie Louise. 



