154 CHRYSANTHEMUMS 



and application of cultural methods which 

 render infection less common, and the limit- 

 ation of the fungus to a single stage (uredo) 

 of existence. . . . That cultural meth- 

 ods have had a great deal to do with the 

 disappearance of the rust is evident from the 

 fact that our most skilful growers of chrys- 

 anthemums have never had it but one or two 

 years, and some not at all; while less skilful 

 and less painstaking growers have been more 

 or less subject to it every year. From the 

 first, we have never apprehended any very 

 serious trouble from the rust, because we 

 believed that some cultural methods would 

 be devised that would render it less trouble- 

 some. . . . Most gardeners agree that 

 weak stock is the most susceptible to rust; 

 and if weak, infected plants are allowed 

 to remain in close proximity to strong, 

 healthy ones, the latter will subsequently 

 become infected. The method of preventing 

 rust consists of hand-picking the infected 

 leaves, selecting clean, strong stock, dis- 

 carding susceptible varieties, and inside 

 culture. If these suggestions are carried 

 out, the rust can be practically eliminated. 

 In regard to inside culture during the sum- 



