74 THE ORCHID REVIEW. (Marcu, 1906. 
CALENDAR OF OPERATIONS FOR MARCH. ce 
By J. M. Brack, Streatham. 
East Inpran House.—There will now be considerable activity in this. 
house, and many of the inmates will require overhauling. Re-potting plants 
of Vandas, Saccolabiums, and Aérides is a matter of much difficulty, as the 
fleshy roots cling tenaciously to the sides of the pots or baskets, and, where- 
ever possible, it is best to leave these undisturbed. With care, most of the 
old material can be removed without much root disturbance, and the fresh 
worked in. The compost for these plants should be of a rough, open 
nature, and should include some half-decayed oak leaves to provide humus,. 
the other ingredients being fibrous peat and sphagnum moss. In potting 
large plants, such as Ang quipedale, large pieces of charcoal can - 
be worked in to keep the whole open and sweet. Plenty of moisture must 
now be distributed in this house, especially round plants that have been 
disturbed. 
Tuuntas.—T. Marshalliana, T. Bensoniz, &c., should be repotted this- 
month. Use a compost of fibrous loam and leaf-soil, to which coarse silver 
sand or broken crocks have been added. Drain well, and keep the base of 
the bulbs on the surface, having left sufficient old roots to: fix them in the 
new compost. The bulbs will require support from sticks. From now on 
they will require plenty of warmth and light, so must be stood well up to’ 
the glass. Apply water-very sparingly until well advanced. 
ZYGOPETALUMS.—Z, Mackayi, Z. crinitum, &c., can also be potted now. 
Fibrous loam, leaf-soil, peat and moss in equal quantities, with the addition 
of silver sand, will make a suitable compost. These should receive a place 
in the Intermediate house, or airy end of the Cattleya house. If kept too 
stagnant the foliage soon shows signs of spotting. 
Decipuous CaLanTHES.—Varieties of C. vestita, C. rosea, C. X 
Cooksoni, C. X Bryan, C. x William Murray, C. x Veitchii, &c., will 
20% be commencing togrow, and should be re-potted when the new growths: 
are an inch or two up. A compost of three parts fibrous loam and one part 
leaf soil, with a sprinkling of silver sand, will be found suitable. The pots 
should be four inches to six inches large, according to the size of the bulb, 
and well drained. Pot firmly, and have the base of the bulb a little way 
under the surface of the compost. he potting material should be fairly 
dry, and not colder than the temperature of the house in which the 
Calanthes are. A warm position well up to the light should be provided 
them, and no water will be required for some days. Keep the surroundings: 
moist, and gradually increase the water as the roots ascend and the foliag® 
expands. 
SHADING AND VENTILATION.—The sun will be too strong this month. 
