90 THE ORCHID REVIEW. [MarcH, rorr. 
pulchellum, Andersonianum, gloriosum, and odoratum, and on wires, 
suspended about a foot from the roof glass, Trichopilias, and Odonto- 
glossum Rossii. 
CULTURAL NOTES FOR MARCH. 
This month is a good one in which to start a collection of Orchids, as 
the winter, which is the most trying season, is now over, and the plants 
are, for the most part, starting into growth. 
WaTERING.—Many Odontoglossums should now be in flower, and to 
these and to ‘those which are growing, give always enough water to keep 
the surface moss green. If fine weather prevails, the plants will usually 
require a good dose every other day. Any other species or hybrids of other 
genera should, if in flower or active growth, be similarly treated. To any 
Orchids which have just passed out of flower, only give little water; to the 
species enough to prevent shrivelling, but to hybrids a little more, and 
remove them to the coolest end of the house. Syringe the floor and 
staging morning and evening on bright days, but once at midday when 
dull and cold weather prevails. 
SHADING.—Should the sun be very bright, the blinds should be lowered 
for a few hours during the middle of the day. 
VENTILATION.—The bottom ventilators should be opened every day, 
and as the weather becomes milder, those at the top should be opened for a 
few hours when the internal temperature of the house reaches 60° Fahr. 
No definite rules can, however, be laid down as to when to ventilate, as so 
much depends on the weather, and good judgment is all that is needed. 
Heatinc.—Fire heat cannot yet be safely dispensed with, for the house 
should never be shut up early in the afternoon, so as to retain the heat for 
the night. Adhere as closely as possible to the following temperatures :— 
Day, 55-60° F.; night, 50-55° F. 
PotTinc.—The winter-flowering Oncidiums should by now have com- 
pleted their rest, and if starting into growth again, should be immediately 
repanned. Any Orchid which requires repotting should be attended to 
this month or next; none, however, but plants just starting into growth 
must be so treated, and, if possible defer the operation till April. Use 
compost for the Oncidiums as mentioned on page 359 of last volume. 
Sponge the leaves of all Orchids once a fortnight with tepid rain-water. 
CATTLEYA House. 
In general structure this house should resemble the Cool house, but it 
should be higher, and provided with narrow shelves about one foot below 
the eaves, and five feet from the ground. As the occupants of this house 
need a higher temperature, a larger size boiler and pipes to heat three 
sides of the house are necessary. A position facing south or south-west 
is best. 
