0 THE ORCHID REVIEW. [JUNE, 1923. 
CULTURAL NOTES. 
By J. CoLLier, Gardener to SIR JEREMIAH CoLMAN, Bart., Gatton Park, Reigate. 
ATTLEYAS, L#LIAS, AND THEIR HYBRIDS. — The weather 
¢ conditions during the past spring months have not been favourable for 
the well being of these Orchids. The unusual absence of sunlight has 
caused the pseudobulbs of many of the plants to be less matured than is 
general at this period of the year. Cattleya Mossi, C. Mendelii, and their 
innumerable hybrids, together with many Brassocattleyas, are at the height 
of their flowering season ; plants that are not well rooted suffer considerably 
. if allowed to carry their flowers too long, so it is advisable to cut the 
blooms as soon as they become fully developed. C. Warscewiczii (gigas), 
€. Gaskelliana, and their many hybrids, are now growing freely, and 
should be afforded the warmest and lightest position in the Cattleya house. 
They should be given a more liberal supply of water at the roots, 
thoroughly soaking the compost through, but allowing it to become 
moderately dry before moisture is again applied. Cattleya Mossiz, C- 
Mendelii, and hybrids, should be looked over as they pass out of flower, to 
ascertain if additional pot-room or new rooting material is needed. The 
same remarks apply to C. Warneri, C. Dowiana, with its variety aurea, C. 
Gaskelliana, and others, that produce their flowers during the late summer 
and antumn months. In the case of C. gigas the necessary repotting 1s 
best done as soon as the plants commence to push new rocts from the base 
of the current year’s pseudobulbs. The most suitable rooting medium is 
osmunda-fibre broken up rather roughly, with a sprinkling of crushed 
crocks incorporated with it. For a short time after repotting careful 
watering is necessary. The plants should be sprayed overhead two of 
three times during bright weather. 
WarM GROWING CypRIPEDIUMS.—-Many species and hybrids of the 
warmth loving Cypripediums, such as C. grande, C. Rothschildianum, C. 
Stonei, together with the dwarf-growing kinds: C. bellatulum, C. niveum, 
C. Godefroy, and their many hybrids, have recently been in bloom, and as 
soon as they have recovered from the effects of flowering, and new growths 
are pushing forth, the necessary repotting should be attended to. None of 
these plants should be left too long in a pot-bound condition. FFill the pots 
to about one-third their depth with crocks, and use a compost of equal 
parts of good fibrous loam, with all the earthy particles shaken out, and 
osmunda-fibre cut up rather finely and sphagnum-moss with sufficient 
crushed crocks to ensure porosity. The dwarf-growing kinds will be 
benefited by some small pieces of limestone being introduced into the 
compost. During the growing season these Cypripediums delight in being 
sprayed overhead -with clean tepid water during bright weather, but care 
