38 PRESENT-DAY GARDENING 



WATERING TERRESTRIAL ORCHIDS 



These, like the epiphytal Orchids, may be divided into 

 two main classes, namely, those which lose their leaves 

 annually, and those which are more or less evergreen. 

 Some of the genera contain both of these classes, and 

 notably the Calanthes. In C. vestita, C. Regnieri, C. rosea, 

 and their varieties and hybrids the leaves turn yellow 

 after the growths are fully made up, a sign which gives 

 a good indication as to the necessity for withholding water 

 for a lengthened period ; while Calanthe veratrifolia and 

 others of the class retain the last-made foliage green all 

 the year round, the loss of foliage being in the old leaves, 

 which should be removed at the first sign of decay. 

 With these latter may be classed the Phaius, Zygopetalums, 

 Cymbidiums, Cypripediums, and many others of evergreen 

 habit, which require much care to be exercised in the matter 

 of withholding water during the resting season, other- 

 wise the plants will decline in vigour. After the growths 

 are finished, most of these plants are benefited by removal 

 to a cooler and more freely ventilated house for a few 

 weeks, during which time the supply of water should be 

 restricted, but they should never be allowed to suffer 

 by being thoroughly dried. For Zygopetalums and other 

 Orchids which it is customary to place in a rather drier 

 atmosphere during the time they are in flower, such an 

 interval would be sufficient rest. 



