Marcu-APRIL, 1919. } THE ORCHID REVIEW. 49 
should be inured to the sun gradually, as the foliage may easily suffer if 
exposed suddenly to strong light. 
Pottinc.—The potting season will now commence, and every oppor-. 
tunity should be taken to push on with this essential work. In most 
collections throughout the country, after the strenuous times of the last 
four years, there are undoubtedly many plants that have not had the 
attention in potting necessary to keep them in the best possible condition. - 
The compost having become decomposed, the plants will soon be on a 
down grade, unless they get the requisite attention in their proper season, 
and in order to facilitate this work, it is desirable to get together the 
different materials required as soon as possible (there being a scarcity), 
so that no valuable time may be lost. Each Orchid should be potted at 
that season when it least feels the check’of disturbance, and that is when it 
“is about to push new roots, and thus is able to avail itself of the new 
compost. 
CattLeyas, Leliocattleyas, and allies, which have produced their 
flowers during the autumn and winter months, and are now showing signs 
of activity by pushing new roots, may have attention as regards repotting. 
These remarks also apply to seedlings of any of the allied genera which 
have as yet not attained sufficient size or strength to produce flowers. Of | 
the species, C. labiata, C. Gaskelliana, C. Percivaliana, and C. Trianz, are 
among those that now require attention in this respect. We may hope 
soon again to be able to procure osmunda fibre, which makes the best 
possible compost for these favourite plants, but failing this, we must adhere 
to well cleaned At fibre, broken leaves, and sphagnum moss. The plants 
must be potted firmly, in small pots,-according to their size, and be watered 
with extreme care until new roots are pushing freely. The numerous 
hybrids may also have attention, if necessary, when their flowering season 
is past. 
DenDRopiums.—During the present period, the whole of these plants 
which require new rooting material should have attention. In going through 
a collection of these, or indeed any other plants, it is not desirable to take 
them just as they come, but to pick them out as they attain the desired 
conditions. The right time to pot is when new roots are in evidence at the 
base of the pseudobulbs, or of the young growth. Many strong-growing 
Dendrobiums will produce young growths of considerable length previous 
to rooting, therefore the grower should wait peti: Chey aes eee to be 
pushing before disturbing the plants. By. waiting for:' the ‘time nes mrtg! 
roots are ready to push, the plants speedily establish themselves in the apes 
material, and the risk of the plants receiving a check, or the young growths 
rotting off, is reduced toa minimum. A most suitable compost 
Plants is made up of equal parts of clean At fibre and sphagnum moss. 
