WINDOW GARDENING 



In nature there is a marked difference between 

 the day and night temperatures. If this condi- 

 tion can be brought about in the dwelling it re- 

 sults in much good to the plants. During the 

 daytime most of the energy goes into the pro- 

 duction of food-stuffs to be used in the building 

 up of plant tissues. At night this food-material 

 is used by the plant in the building up of new 

 tissue and during this period of greater growth 

 a lower temperature is beneficial rather than 

 detrimental. 



Where a day temperature is maintained at 

 from 60 to 70 degrees, the night temperature may 

 be from 10 to 15 degrees lower. It is hardly 

 surprising that many plants fail to do well in 

 a modern steam-heated dwelling where the tem- 

 perature is maintained at from 75 to 80 degrees 

 day and night — a temperature which is ruinous 

 to human as well as to plant life. 



SELECTION GOVERNED BY TEMPERATURE 



Plants should be selected, then, with reference 

 to the temperature of the room in which they are 

 to be kept. Some plants do well in a warm 



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