DISEASES OF t^ARDY PLANTS. 227 



plaiife are frequently sprayed these fungi will have no 

 chance to develop. The foliage, too, should be kept fairly 

 dry, then the spores cannot vegetate. 



Hollyhock Rust (Puccinia malvacearum).— At one 

 time this fungoid disease played great havoc with the 

 hollyhock. Unfortunately, it is still with us, and many 



C A R .N AT ION D I .-• E A < P: S . 

 A, Carnation Uiist; B, Carnation Spot; C, Eelworm Disease; E, Eelwonu 

 largely magnified. 



lovers of the hollyhock consequently find it difficult to 

 grow plants free from it. Its presence is easily detected 

 by a multitude of brown warts or pustules studding the 

 vmder surface of the leaves, as well as the surface of the 

 stem. The fungus causes the leaves to turn j^ellow and 

 die, and the growth consequently becomes stunted. 



Eemedtes. — Diseased leaves should be pulled off and 

 burnt at once. Wholly diseased plants should be treated 



Q 2 



