THE ORCHID REVIEW. 249 
CALENDAR OF OPERATIONS FOR AUGUST. 
By H. A. BURBERRY, Highbury, Moor Green, Birmingham. 
Some of the earliest of the Dendrobiums will, during this month, complete 
their new pseudobulbs, and should be given a position in a cooler house. 
where a good amount of light and air is obtainable, so that the new and as 
yet unripened growths may duly become properly matured. Do not, how- 
ever, let them become dried, scorched, and shrivelled up, by altering their 
growing conditions too suddenly; but bear in mind what I said last 
month, and avoid withholding water at the root too soon. Dendrobium 
Wardianum frequently breaks again quickly from the base, but this fact 
must not interefere in the least with the proper course of treatment. When 
these new breaks appear, some growers will encourage them by leaving 
their plants too long in a growing temperature, which only causes them to 
become weak and spindly, and therefore worthless. The above remarks 
apply equally to all other spring flowering species of Dendrobium. As soon 
as the main pseudobulb has finished its growth, by producing its last leaf, 
they should be given cooler treatment, quite independently of any secondary 
growth that may have started from the same pseudobulb. With those 
which flower in autumn it is different, they must not be removed from their 
growing quarters at least until after they have bloomed ; by which time, in 
all probability, the will have cooled down considerably, so that 
J P 
to remove them is unnecessary. 
Many of the Cattleyas and Lellias will likewise be drawing their growing 
season to a close, and should, if possible, be ventilated rather more freely 
than those still to finish. Among them principally will be found Cattleya 
Warscewiczii (gigas), which, by the way, should now be repotted where 
necessary, as soon as roots are seen pushing from the base of the pseudo- 
bulb. C. Gaskelliana is another that has finished, and probably flowered, 
and should now be given plenty of air, when the roots will continue to grow, 
forming quite a network on the compost—a pleasant and re-assuring sight 
to the grower, as Orchids must have healthy roots, and the more of them 
the better. Generally speaking, it is a good plan to encourage now the late 
growing kinds, such for instance as C. Mossi and Mendelii, if it is possible 
to do so, by giving them a slightly warmer and moister treatment than 
those which have already made up. The time of year is getting on, and it 
is well to have the growths as far advanced as possible, before the bad 
weather sets in. C. Lawrenceana is a very late-growing species, and for 
that reason it is best grown in the Dendrobium house, where C. superba, 
and C. Luedd i i ima), should also be grown. When C. 
Rex was first introduced, I was misled as to its requirements, and under- 
Stood that more warmth than that of the usual Cattleya house was essential 
