May, 1911] THE ORCHID REVIEW. 157 
whichever style is used. The object in this class of plants is to get all the 
flowers looking one way, and therefore the plant should not be turned 
round whilst opening its flowers, as they all turn to the light. Any plants. 
of these species having failed to flower, or having had their spikes removed 
through not being strong enough to flower, may be repotted, this being 
done when they are making new roots from their young growths. The 
compost I recommend is the same as used for Odontoglossums. The. 
coolest, dampest position in the Odontoglossum house suits these plants. 
OponTocLossums of the grande, Insleayi, and Uroskinneri section 
which require repotting, and have commenced to make roots from their 
new growths, may be done at this season, using the compost as for other 
Odontoglossums. This section may now be placed at the warm end of the 
Odontoglossum house, where they will thrive best during the hot months. 
SoprRALIAs that are showing their flower spikes, if at all pot-bound, will 
benefit by an occasional watering with weak liquid manure water, which 
will be a great aid to them in developing their flowers. In fact, manure 
water is beneficial to all terrestrial Orchids when in full growth or when 
pushing up flower spikes. 
STANHOPEAS are not now seen as much as they deserve, but where they 
are grown some will now require potting, and may be attended to at 
this season. They should all be grown in baskets suspended from the roof 
of the Warm house, frequently sprayed overhead and. under their leaves, to 
prevent the ravages of red spider, which will often attack them. A suitable 
compost for them is equal parts of peat, osmunda fibre, and sphagnum 
moss. The compost should be made moderately firm, and carefully 
watered until the new growths get well advanced. 
ZYGOPETALUM Mackayi and crinitum will now perhaps require repotting. 
They must have ample rooting space, but should not be over-potted or 
buried, so to speak. A suitable compost for them is equal portions of peat, 
osmunda fibre, and sphagnum moss, with the addition of a little fibrous 
loam, mixed well together, and used ina fairly rough state. After repotting 
they should be placed at the cool end of the Intermediate house, and 
should be protected even from weak sunshine. When in full growth and 
well rooted, they should have liberal supplies of water to the roots, and 
should be frequently sprayed overhead. 
GENERAL REMARKS.—Continue to wage warfare with all insect and 
other pests by hand-cleaning, fumigation, and other means. Keep the 
atmosphere of all the houses sweet by the admission of air on all favourable 
occasions, as the health of our plants depends on their needs being satisfied, 
and a supply of fresh air is as essential as a supply of water. Let cleanli- 
ness reign supreme in all matters, and, if possible, rather let us err on the 
side of over=cleanliness than otherwise. 
