What You Need to Know 9 



With modern standard construction and heat- 

 ing anybody can keep a house at the desired 

 temperature, and temperature troubles may be 

 forgotten if arrangements are made to provide 

 about 50 degrees for a single house, or 45 degrees 

 and 55 degrees if you have two houses. Re- 

 member, too, that when greenhouse temperatures 

 are mentioned it is always the night temperature, 

 allowing for an increase of say 10 degrees by sun 

 heat in the daytime. 



Soine Points on Watering 



In gardening outdoors dependence for mois- 

 ture is mostly on the gentle (or otherwise) dews 

 from heaven, using the hose or some accessory 

 system of overhead watering such as the Skinner 

 system only when the natural method fails to 

 provide adequately. 



In the glass garden, on the other hand, watering 

 is wholly under control. This has both advan- 

 tages and disadvantages, but the former out- 

 weigh the latter. Getting enough moisture for 

 the plants is, of course, easy — nothing to do but 

 turn on the water. A thing that has to be 

 learned, however, is the importance of keeping 

 the soil, in pots or benches or beds, evenly moist 

 at all times. It might seem a reasonable guess, 

 at first glance, that the best way to do this would 



