262 Agricultural Experiment Station, Ithaca, N. Y. 



Red Spider. — Like the preceding, the red spider, Tetranychus 

 telarhos of scientists, is so small that it has often done serious 

 injury before it is noticed. In a dry atmosphere it forms a regular 

 maze of web-work on the under side of the leaves of the plants, and, 

 if unchecked, in time extends over every part of the entire collec- 

 tion. The treatment is to keep the plants and houses damp. 



Tarnished Plant Bug [Lygus pratensis). — Among chrysanthe- 

 mum growers this pest is perhaps better known as the chrysanthe- 

 mum fly. This insect is very common, and we are indebted to it 

 for the injury known as " blind growths " or " blind buds." It is 

 of stout build, about one-fourth of an inch in length, and of brown- 

 ish or yellowish color. It attacks a great variety of plants, both 

 ornamentals and fruit plants, and seems especially fond of chrys- 

 anthemums. Anyone who has collected seeds of our hardy herb- 

 aceous perennials in autumn must have come in contact with it, for 

 it abounds in the flower heads of asters, solidagos and the like. It 

 punctures the young growths, buds and leaves of chrysanthemums, 

 extracting and subsisting on their juices, and thus renders them 

 useless. Pyrethrum powder and kerosene emulsion are the best 

 preparations for destroying the pest, but where the insects are few 

 in number they may be collected by hand with little trouble. 



Thrijps. — Several species of these little insects infest garden plants. 

 It is known that they injure the foliage by mutilation and by with- 

 drawing its fluids, and their black deposits have the effect of putting a 

 decided stop to the development of the leaves. When the dark, round- 

 ish spots are noticed, both surfaces of the leaves or plants out of doors 

 should be thoroughly sprayed with tobacco water, and plants in simi- 

 lar circumstances under glass should be fumigated with tobacco. 



A Recent Bud Troiible. — A new source of annoyance has 

 appeared within the past year in the form of the premature death 



of the flower buds. The stem 

 immediately beneath the bud 

 swells to some extent, and this 

 is followed by the gradual 

 53.— a recent bud trouble, dccay of the bud and a small 

 portion of the stem, as in Fig. 53. At first it was 

 thought that the trouble was confined to the variety 

 Challenge ; but later reports prove this to be erro- 

 neous, many of the prominent varieties being 

 affected in the same way, and we have had the variety Red Robin 



