May-JuNE, 1920.] THE ORCHID REVIEW. 77 
removed, as if allowed to develop they may completely wreck the plants. A 
good compost for them consists of equal parts of fibrous peat, Ax fibre, and 
sphagnum moss, with a fair proportion of half-decayed leaves added. The 
material should be used as rough as possible, according to the size of the 
plants, and be placed in the pots firmly. Newly-potted plants will not 
require much water for some time, but as growth and roots develop the 
amount may be considerably increased. They revel in abundance of fresh 
air, and the pseudobulbs made under its influence are much harder in 
substance, a very important point in the cultivation of all Orchids. 
Frequent overhead syringing is very beneficial during bright, hot weather, 
and is a great aid to keeping them clean. 
CATTLEYAS AND ALLIES.—The spring-flowering section will now be 
pushing up their flowers, and it is advisable to place the plants where they 
may receive abundance of light and air. When in bloom the plants may 
be kept slightly drier at the roots, and the atmosphere slightly cooler and 
drier, which will keep the flowers longer in perfection. The repotting of 
plants which have blossomed, and are beginning to push roots at the base of 
the pseudobulbs should have attention. C. Warscewiczii (gigas) and 
C. Dowiana, with several of their hybrids, are now forming new growths, 
and should be placed well up to the roof-glass, where they may receive 
plenty of light and air. Although the plants may appear to be growing 
strongly, care should be exercised in watering, as an excess at this stage 
may do much harm. C. Triane and C. Schroedere, with many hybrid 
Cattleyas, Lzliocattleyas, Brassocattleyas, and allied subjects that have 
recently passed out of bloom, may be repotted whenever they commence to 
make new roots. Any plants of C. Mossiz and Mendelii which have 
failed to produce flower sheaths may have similar attention when they are 
about to push new roots. Those which have deteriorated through loss: 
of roots, or other causes, may be repotted into small receptacles and started 
afresh. The pots should be well drained, and a well-cleaned compost used. 
as previously advised for Cattleyas. 
SOPHRONITIS. GRANDIFLORA and its hybrids may be treated in precisely 
the same manner as Cattleyas when fresh rooting material is required, but 
the dwarfer ones must be placed in smaller receptacles, and the potting 
material pulled into smaller pieces. They are best grown suspended close 
to the glass, and now comprise plants of a most varied character. 
OpontoGLossuMs.—O. citrosmum and O. Uroskinneri may be repotted 
as they pass out of bloom. The pots should not be too large, and the 
drainage must be perfect, the pots being quite half filled with clean crocks- 
The usual Odontoglossum compost is quite suitable, and the plants must be 
potted firmly. . citrosmum thrives suspended quite close to the roof of 
either the Cattleya or Mexican house, and O. Uroskinneri will succeed best. 
