Diseases and Injurious Insects 



the Hop Mildew, the Pear Mildew, etc. All varieties of Mildew 

 may be checked by dusting flowers of sulphur over the affected 

 and the adjoining parts of the plant. 



As soon as the least speck of Mildew is noticed on any part of 

 the plant, the affected part should at once be given a good dusting, 

 and this work should not be delayed an hour longer than is neces- 

 sary, otherwise serious damage will be the result : for example, 

 if the plant attacked is a Rose, the Mildew, if not checked, will 

 ruin the crop of flowers. 



Bordeaux Mixture is also a good cure for Mildew, and may 

 be used if sulphur should fail, and should be applied in the same 

 manner as sulphur. 



A sulphur bellows made especially for use in this work may 

 be procured from any seedsman at little cost, and it will be found 

 that the use of the bellows economizes the sulphur. 



Green Flies (Aphides), sometimes called Plant Lice, are 

 very destructive to the young shoots and foliage of plants, 

 especially Roses on which they congregate in large numbers and 

 send their long sharp feelers into the bark and leaves, sucking 

 the juice from the plants. As they multiply with astonishing 

 rapidity, they, if not destroyed, will eventually cause the destruc- 

 tion of the parts affected, and this in a very short time. 



The best remedies for successfully getting rid of these pests 

 are Tobacco and Whale-oil Soap ; even common soap-suds, when 

 not too strongly impregnated with soda or chloride of lime, will 

 be found effective for this purpose if the foliage is syringed 

 freely in the evening and sprayed with clear water through the 

 hose the following morning. This should be done three consecu- 

 tive evenings. 



To apply the tobacco, one pound of the common tobacco- 

 leaf should be first soaked in six gallons of hot water to which 

 should be added one-half pound of soft black or whale-oil soap. 

 These should be mixed together by the syringe, and the plant 



[303]' 



