The Orchid-house 



the amateur be determined to grow cool species 

 alone, never under any circumstances to take up 

 those others, he should choose a site where his 

 house can be built north and south, but facing 

 east, or, if that be unattainable, east and west, 

 facing north. New Granadan Odontoglots are not 

 quite comfortable under a southern aspect, which 

 suits the lowland genera, for heavy shading is 

 required to protect them from the sun, and that 

 excludes also the light. But I would not dis- 

 courage the amateur who has only one spot, with a 

 southern aspect, in which to place his Odontoglossum 

 house. More attention is needed to keep it moist, 

 but the plants bloom very freely, if they do not 

 make such rotund bulbs as an expert would wish. 

 Upon the other hand, some Mexican species, 

 as Oncidium tigrinum, Cattlcya citrina, Lcelia Ma- 

 jcdis, love the sun so well that in a lean-to running 

 north and south they should have a place apart ; 

 if that can be given them towards the north end, 

 they want only a slight shading in the hottest 

 season. A rule which I have noted is very useful 

 to guide inexperience in this matter. Hard and 

 shiny pseudo-bulbs warn us that the species is 

 sunny— nature protects it thus ; a soft pseudo-bulb 

 means that the species is shady, and needs defence 

 against the sun in proportion to its softness. There 



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