JANUARY, 1907. | THE ORCHID REVIEW. ir 
during cold and inclement days, to prevent the plants being saturated with 
moisture in the morning, especially if the situation is a low and damp one, 
or if the house is one that naturally holds much moisture. Some houses. 
contain more humidity without damping than others do with it, so that it 
is important that each house be considered individually and treated 
accordingly. 
CATTLEYA Hovuse.—The flower buds on Cattleya Percivaliana and C. 
Trianz are now fast pushing up, and the lightest position should be given 
them from now till after the flowering period is over. Rather more water 
than they have been receiving since the completion of growth is essential to: 
properly develop their flowers, reducing the supply again directly the latter 
are removed, and continuing this course till growth activity is in evidence. 
This also applies to any of the hybrids now developing flowers. 
Vigorous plants, especially of hybrids that have produced flowers, 
should be kept in a very dry state till new growth starts away. I am sure 
many strong bulbs are lost with that fatal black disease, from the fact that 
the plant has many active roots taking up more food than the growth 
requires—if water is given often during the short dull days—the cells of the 
bulb becoming over-charged with food, for which it has little use, setting 
up as a consequence that disease so well known to mostofus. It invariably 
happens just after flowering, or during that period between the full develop- 
ment of the pseudobulb and its season of pushing its flower buds, when the 
plant is neither growing nor producing flowers. I have seen it in species as 
well as hybrids, but as hybrids are generally the best growers it is in these 
that it most often occurs. 
DENDROBIUM HousE.—The flower buds on many of the deciduous and 
semi-deciduous varieties are now freely extending with us, and more water to: 
the roots will be required than they have been receiving since the full develop- 
ment of the past season’s growth, but even now allow the plants to become 
fairly dry before affording more water. When the outside temperature 
does not fall below 40°, maintain a minimum temperature of 65°, but during 
colder weather a minimum of 60° will be preferable. Any check givem 
during the development of the flowers, either from lack of water or from 
too low a temperature, will reduce the size of the flowers considerably. I 
know many will consider I am writing this too soon, but we always try to 
have our Dendrobiums in flower during the latter part of January and. 
February, and for several years past the first week in February has seen 
them at their best. When they are flowered early in the year they are 
more appreciated, and I have every hope that these beautiful Orchids will 
once again become popular. 
INTERMEDIATE HovusEe.—For producing flowers during the first month 
of the year Lelia anceps takes a very prominent place among Orchids. We. 
