SUCCESSION OF FLOWEES. 



277 



sempervirens, from Candia, with purple flowers; besides 

 these, there are ciliosa, from Patagonia, sipko and tomentosa, 

 from America. The soil must be rich loam and peat, and 

 the roots should have ample space. 



A good selection from the foregoing list of plants will 

 enable the cultivator to have the greenhouse constantly gay ; 

 and should a hothouse be also close at hand, it will be still 

 more easy to provide a succession of beautiful flowers. The 

 greenhouse being used as a shelter for plants from various 

 countries, the heat must be regulated as much as possible 

 to suit the greater number. It is considered that the less 

 fire-heat is employed, the more healthy the plants will be ; 

 but in winter the thermometer must never be allowed to 

 fall to freezing-point, though in the night if it be kept just 

 above this, and in the day raised to thirty-eight or forty de- 

 grees, it is sufficient for health : this is the plan for very 

 severe weather. The general average winter ^^-temperature 

 should be about forty-five, and the night thirty-eight degrees. 

 As the spring advances, a little more heat may be intro- 

 duced, to force the growth of the plants ; and those which 



