126 



GREENHOUSE MANAGEMENT. 



much more frequently, in order to prevent their drying 

 out. For this reason, unless careful oversight is given 

 the plants, the basket will be better than blocks and 

 rafts, except, perhaps, for certain species of Epiden- 

 lrum, Odontoglossum and Dendrobium. 



PIG. 46. PHALJSNOPSIS GRANDIFLORA. 



The repotting of orchids is generally done just 

 before growth commences. It should be performed 

 annually in the case of Calanthe and Phaius, but a top- 

 dressing will be all that, most species require, until they 

 outgrow their basket or pot. 



