46 THE ORCHID REVIEW. [Mar -APRIL, 1920. 
given so many times in these pages, that there is no need to repeat it. The 
sooner the potting is completed the better, the plants getting a much longer 
season of growth, and plants that are well established and well rooted 
produce flowers of improved quality. 
CaTTLeEyas, Leliocattleyas, Brassocattleyas, and other members sf this 
large and beautiful family that have passed out of flower, and are about to 
push new roots, should have attention as regards repotting, should they 
require it. It is necessary that the compost in which they are grown 
should be kept in a sweet and healthy condition, hence the necessity of 
potting the plants firmly., No Orchids resent sour material. more than this 
family, and none will succeed better if kept in sweet material. A suitable 
compost is made up of equal portions of peat, At and osmunda fibres, and 
sphagnum moss, all thoroughly cleaned and used in a rough state. If any 
difficulty is found in obtaining good peat fibre it may be left out, but 
personally I think better root action is obtained when it is used. 
DENDROBIUMS of the deciduous section will now be responding to the 
influence of increased light and heat, and flower buds will develop quickly, 
and make a good show.. As a means of prolonging the display some plants 
may be removed to cool quarters, but this is not to be recommended in the 
case of weak growers or delicate plants. D. Phalznopsis and ‘its varieties 
that are developing new growths, and are in need of new material, should 
have attention as soon as new roots are observed to be pushing from the 
base of the young growths. It is perfectly safé to repot any plant whenever 
new rcots are observed to be pushing. The chief detailsin the cultivation 
of these plants are plenty of heat, light, and moisture whilst in full growth, 
with a dry rest after growth is completed. A clean fibrous compost made 
up of equal portions of Ar fibre and sphagnum moss will answer their 
requirements. They should be placed in small or moderate-sized recep- 
tacles, as over-potting is detrimental 
ODONTOGLOssUMS.—The present season is a suitable time to afford more 
root room to such plants as are not flowering, but none should be disturbed ~ 
unless repotting is absolutely necessary. Those having sufficient root-room, 
and the material in good condition, should not be disturbed until the 
autumn. Plants that have their new growths overhanging the edge of the pots 
may be turned out, all useless back bulbs removed, and as much of the back 
part of the compost taken away as possible. The material for repotting 
should consist of a mixture of peat and Ar fibre, sphagnum moss, and 
broken leaves, all thoroughly mixed together. The pots should be well 
drained, for although these plants need plenty of water whilst growing, a 
stagnant compost is injurious to them, as to other Orchids. After repotting, 
afford water with great care, for amy excess of moisture at this stage will 
cause the old roots to perish, and the pseudobulbs to shrivel. Plants 
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