﻿THE ORCHID REVIEW. 



[October, 1904. 



they may be required for a few hours during bright sunny days. Where 

 Cattleyas and Mexican Orchids are grown no shade should now be given. 

 Air should be admitted as freely as the outside conditions permit, and less 

 water will suffice for damping, unless much fire heat is required. Water 

 now with a good deal of care and discretion, for as the days shorten and 

 become darker much less moisture is needed to keep the plants plump and 

 healthy. Avoid draughts, however, which produce starved-looking plants 

 with shrivelled up pseudobulbs, for such plants rarely fully recover. The 

 above remarks apply equally well to such Orchids, as the Oncidiums, Zygo- 

 petalums, Miltonias, Cymbidiums, Cypripediums, &c, excepting that the 

 majority of these, being continually in a growing condition, will require a 

 little more water at the roots, though with these also watering should be 

 done carefully, for nothing whatever is gained by keeping any Orchids 

 — whether growing or otherwise — too wet at the roots. 



As more warmth from the hot water pipes is needed in the East Indian 

 house, twice a day for damping down will not be too often. The active 

 growing period of most of the inmates of this department has now passed, 

 and they will enjoy a somewhat drier atmosphere, in order to harden off 

 the growth, and to prevent damping. Air should be admitted on all favour- 

 able occasions. Of course, I do not advise such an airy and dry treat- 

 ment as for the Mexican Orchids, as that would quite ruin many of these 

 warmer ones, and especially those having no pseudobulbs. 



Many plants that made their growth in this house are now, on its com- 

 pletion, resting in the cooler temperature of the Cattleya or Mexican houses. 

 Among these are, of course, many of the Dendrobiums. Then there are the 

 genera Mormodes, Chysis, Cycnoches, and Catasetum, which have 

 flowered, all enjoying similar treatment. 



Besides being necessary to remove some plants to cooler quarters at this 

 season, there are also a good number that are better if transferred to warmer 

 houses for the winter. Some of the intermediate growing kinds will be 

 taken to the warm house, such as Miltonia spectabilis and its variety 

 Moreliana, M. Clowesii, M. cuneata, and M. Phalamopsis, also the Acinetas 

 and allies. Unless Cattleya Lawrenceana has been grown in the warm 

 house, it should be taken there now, in order to hasten the completion of 

 its pseudobulbs, as the growth is often backward. There are also several 

 other Cattleyas which, although growing well with the rest, are all the 

 better for a little extra heat during winter, such a C. Rex, C. Luedde- 

 manniana, C. superba, C. Eldorado, C. Aclandise, C. intermedia, and any 

 hybrid that may have been derived from these species. 



Many of what are known as intermediate Orchids are grown well in the 

 coolest house for the summer, but it is better to remove them again during 

 this month. I refer to such species as the Anguloas, Laslia pumila 



