Gardening in Californi 



should be thoroughly syringed with the liquid in the evenings 

 and washed by the hose with clear water early the following 

 mornings. 



Sometimes it is not desirable to use tobacco in liquid form. 

 In that case the leaves can be dusted freely with tobacco dust 

 which should be left on the foliage for about forty-eight hours, 

 and then washed off with the hose. Should the first application 

 be not effective, a second or even a third application can be made 

 until all the flies are cleared off. 



Several prepared mixtures are sold by seedsmen, such as Gis- 

 hurst's Compound, Fir-Tree oil, etc., which, if applied as directed 

 on the labels, will be found effective. Often water used freely 

 with the hose under good pressure will clean them off if applied 

 before the flies have got too strong a hold on the plant. 



There are other kinds of Aphides some of which are black and 

 attack Cherries and other fruit trees, but they generally yield to 

 the same treatment. 



When the Aphides attack plants in a green-house, fumigation 

 with tobacco stems will be found the best remedy. A close, dull 

 evening should be selected and the foliage of the plants should be 

 perfectly dry. 



To effectively fumigate a green-house it is necessary to get 

 an iron pot into which should be put a few pieces of lighted char- 

 coal, on which should be spread a few tobacco stems. On top of 

 the tobacco a layer of damp moss should be placed, and the house 

 should be densely filled with the smoke, care being taken that no 

 flame arises in the burning. The house must be kept perfectly 

 closed for twelve hours. Then the ventilator should be opened 

 and the plants syringed freely with clean, tepid water. Should 

 the first smoking not be effective, the operation can be repeated 

 a second evening in the same manner, and, when the fly has had 

 a long hold on the plants, it may be necessary to fumigate even 

 a third time. 



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