210 CULTIVATION. 



ing in design and extent, even up to this day. 

 They usually contain all the hardiest plants 

 of the torrid zone, Chinese, Australian, south 

 African, and the tender plants of North and 

 South America. 



Green-house plants are raised from seed, and 

 most easily porpagated by cuttings and layers, 

 much in the same way as has been directed for 

 stove plants ; only they do not require, in any 

 stage of their existence, so much heat. The 

 degree called temperate, 56^ Fahrenheit, is most 

 suitable for them in all seasons. Grafting is also 

 a means of propagation, and is decidedly the 

 best for such plants as the Camellia, Orange, &c. 



Various kinds of soil and compost are neces- 

 sary in the cultivation ; sandy loam, rich loam, 

 moor-earth, m.ore or less mixed with sand, leaf- 

 mould and Hme, or rather old mortar rubbish. 

 Except Oranges, Lemons, and Citrons, no other 

 plant in this department requires a manured soil. 

 The grand object is to keep them in the highest 

 health, without forcing them into over luxuriant 

 growth. When a green-house shrub, or tree, 



