May, 1910.] THE ORCHID REVIEW. 139 
CaTTLEyaAs:—C. Lawrenceana is now in flower, and should have copious 
supplies of water till the flowers are off, when they should be kept well on 
the dry side till the young growths are well away. This beautiful old 
species thrives best when grown in a warm -position with a free circulation 
of air. I saw agrand batch of them near Burton-on-Trent about five years 
ago. They were placed ona centre stage, facing a doorway between two 
Cattleya houses, one being cooler than the other. They were in six and 
seven inch pots, and had stout bulbs over one foot in height, and carrying 
four and five trusses of flower on each plant, ranging from ten to eighteen 
flowers on each truss. The door was always left open, causing 
a constant circulation of air. Since seeing them I have always tried to 
place mine where they get plenty of air, and find that that is what they 
like, for I have found a marked improvement in them every year since 
trying it. C. intermedia will now be passing out of flower, but the supply 
of water should not be reduced till the growth is quite madeup. A mistake 
often made by beginners in Orchid cultivation is that of treating all Cattleyas 
alike, and reducing the supply of water of those that flower before the young 
growth is fully made up, as well as those that make their bulbs and rest 
before flowering. C. Schroeder, C. Mendelii, C. Mossiz, and many of 
their hybrids are now in flower, and should have plenty of water till the 
flowers are off, when they must be kept on the dry side till the young 
growths are well started. They may then be repotted, using the compost 
as recommended in February. After repotting they should be placed in a 
shady position, and plenty of moisture kept around them, but care should 
be taken not to give them much water at the root till they are well- 
established again. 
DENDROBIUMS.—D. Phalznopsis is a plant that requires much atten- 
tion as to potting. The growths should be allowed to get about three 
inches high before repotting, and not till then should they be touched. 
Where they are grown in quantity some were ready for repotting last 
month and some now, while others may not be ready till early in June. It 
pays to wait till they are ready. Ifthe compost is sweet and sound, and 
they have room to make the new growth, leave them alone, but if repotting 
is necessary perforated pans that can be suspended from the roof are the 
best for them. The pans should be large enough to hold them two years, 
as they do not like to be disturbed too often. We find that they do best 
in a compost consisting of half of each of good fibrous peat and sphagnum 
moss, well mixed together and pressed in moderately firmly. They should 
be grown in the hottest portion of the house. I have often seen them do 
extremely well when grown in the ordinary plant stove. After repotting 
only sufficient water should be given to prevent them from shrivelling 
until they are well rooted, when they should have copious supplies till the 
