CHAPTER IX 



Insects, Diseases, and Remedies 



Aphides — Red Spider — Grasshoppers — Caterpillars — Leaf- 

 spot — Mildew — Rust 



While the chrysanthemum is subject to 

 the depredations of several species of insects 

 and fungi, fortunately there is none that 

 may not be overcome without serious 

 injury to the plants if the grower will give 

 vigilant attention to the matter, and use 

 such preventive and destructive measures 

 as are available. 



The most common, pernicious, and persis- 

 tent insect enemy is the green aphis. The 

 black aphis is also quite common, but is 

 easily destroyed by the means recommended 

 for the green aphis. This latter species 

 works its way into the folds of the young 

 leaves as they are developing, and is 

 with difHculty reached with either liquids 

 or fumes, without injury to the young 

 growth. The grower must be constantly 

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