Marcu, 1912.] THE ORCHID REVIEW. 83 
subject to attacks of scale, thrip, and other pests, which must not be 
allowed to gain a foothold. 
PLEIONES.—Such sorts as P. maculata, lagenaria, and Wallichiana are 
growing vigorously, therefore will require more water at the root. These 
plants being subject to attacks of red spider, a very light spraying 
under their leaves will be beneficial from time to time, but on no account 
must water be allowed to enter the centre of the growths. Such sorts as 
P. humilis and any of the late-flowering section, having now passed out of 
bloom and commenced to grow, may have attention as regards repotting, 
should it be necessary, using the same compost as for Cypripediums. 
MILTONIA VEXILLARIA will now be growing vigorously, and will require 
a plentiful supply of water at the roots, and towards the end of the month 
may be placed at the warm end of the Cool house, or the cool end of the 
Intermediate house—either will answer their requirements. I find the 
flower spikes are finer, the flowers !arger, the colour richer, and the plants 
better in every way when grown in a practically even temperature the whole 
year round. M. Roezlii, M. Bleuana, and other hybrids may now be 
removed from the warmest house to a moist shady position in the Inter- 
mediate house. Thrip and other insect pests which are very troublesome 
to Miltonias must be kept in check. 
CattLeyas.—C., Percivaliana and C. Trianz, as they pass out of flower 
and begin to push new roots, may have attention as regards repotting, 
should it be necessary, using the same compost as for Lelia anceps 
recommended last month. There are many other Cattleyas of the C. 
labiata section and numerous hybrids, which also may have attention in the 
same way, should they require it. It is most difficult to say when any 
particular Cattleya or Leliocattleya should have attention, but if new 
roots are about to push forth from the rhizome, the cultivator need not 
hesitate in the least. Should the plant or plants then require new compost 
give it to them. Thereis onlya very small part of the year in which we are 
not potting some one or the other of the members of this glorious family. 
CYPRIPEDIUMS must be potted as they pass out of flower, using the 
compost as advised for the C. insigne family in last month’s Calendar. 
The more of this family that can be done now the better able are we to 
devote time and attention to other subjects which need them during the 
busy season of the next three or four months. 
C@LOGYNE CRISTATA and its varieties will now be in full bloom, and 
well-flowered plants of this beautiful old species are not easily surpassed. 
When the plants pass out of flower they should be rested in the Inter- 
mediate house until the new growths are seen to be starting from the base 
of the pseudobulbs, when they may be watered in the usual manner. After 
carrying a very heavy crop of flowers, the bulbs of these plants will often 
