264 GREENHOUSE MANAGEMENT. 



not be used in the dwelling. Tobacco tea can, however, 

 be employed for the green fly, either by spraying it over 

 the plants or by dipping the stems into it. Pyre thrum, 

 both as a powder and in water, and kerosene emulsion 

 will be found invaluable remedies. 



In addition to syringing and washing the foliage, 

 much can be done to keep the plants healthy, if a little 

 ventilation can be given on pleasant days. While plants 

 do not like drafts of cold air, they are benefited if a fresh 

 supply is frequently provided. 



From the fact that the air in the living rooms is 

 likely to be dry, the kitchen, with an atmosphere, during 

 most of the day, charged with moisture, will be found 

 best suited to plants, particularly while they are small. 

 The fact that there is more direct and more frequent 

 communication with the outer air from the kitchen than 

 from the principal living rooms, thus affording ventila- 

 tion and the access of fresh air, is another reason why 

 plants grown in the kitchen of the cottage generally thrive 

 better than in a bay window of the mansion. 



One of the things that is sure to injure plants is coal 

 gas, and whenever coal is used as fuel, whether in a fur- 

 nace or stove, every precaution should be taken that it 

 does not escape into the rooms and thus injure the 

 plants, as well as the human occupants. 



THE TEMPERATURE EOR HOUSE PLANTS. 



The temperature which plants require in the dwell- 

 ing is of course about the same as has been given for the 

 greenhouse, but the growth, as a rule, is less soft and 

 watery than in those grown in glass houses and they will 

 generally be uninjured if the temperature drops a few 

 degrees lower than the point where injury would ensue 

 in the greenhouse. On cold nights, when there is liabil- 

 ity that the temperature will fall below the danger point, it 

 is well to spread newspapers in the window and draw tne 



