Fepruary, 1913.) THE ORCHID REVIEW. 37 
produce their flowers at the same season, and have now passed out of 
bloom, may receive attention as regards repotting, should it be necessary. 
A suitable compost consists of equal parts of peat fibre, Ar fibre, and 
sphagnum moss, with some clean loam fibre added. The pots must be well 
drained, and the new material kept on the dry side until the new roots have 
entered the material freely. These plants can be taken in hand as soon as 
their flowers are cut or faded, and after repotting they may be thoroughly 
cleaned and placed in their growing quarters, where, under proper 
conditions, they should thrive until their flowers appear in the autumn. 
CATTLEYAS AND ALLIED PLANTS.—These at the present time comprise 
so many plants and of such diverse parentage, all of which succeed under 
practically the same conditions, that for cultural purposes they may be placed 
together. Like the species, they have an individuality of their own, some pro- 
ducing thick fleshy roots and others thin ones, and these matters all affect their 
treatment. Whilst the strong-rooting varieties may be placed in large 
receptacles, in comparison with the size of the plants, the feeble or small- 
rooting varieties must be placed in small ones. Those plants which pro- 
duced flowers during the late autumn and winter months may be repotted 
as soon as new roots are observed to be pushing from the base of the last- 
made pseudobulb. A clean open material, made up of either peat fibre or 
At fibre, answers their requirements, and the plants should be potted firmly. 
Cattleya Triane, and others which are now in bloom, may be treated in 
precisely the same manner when their flowering period has passed. In the 
cultivation of this large genus I should like to put forward a word of caution 
against the continual change of material used as a rooting medium. Because 
some individual grows a plant exceedingly well in some particular compost, 
it is not bound to be a success in every case. I have seen much harm done 
by placing these plants first say in leaves and then in another material. 
Drastic changes are not desirable, except in exceptional cases, and experi- 
ments should be made on a limited number of plants at atime. The chief 
items in the cultivation of these plants are an even temperature, a sweet 
atmosphere, a clean rooting medium, water when growing whenever they 
become dry at the roots, and whilst at rest only sufficient to keep them 
plump and healthy. Cleanliness is one of the greatest aids to good 
cultivation, and as proof we may mention how soon a plant infested with 
scale recuperates after it has been removed. 
MeExiIcAN Lattas which have passed out of flower, and are about to 
push new roots, may now be repotted, should it be necessary. The same 
material may be used for these plants as recommended for Cattleyas. 
VANDAS, AERIDES, AND SACCOLABIUMS.—Any plants of these Old World 
Orchids, which are showing signs of renewed root action, may have attention 
as regards repotting or resurfacing. I do not advocate resurfacing plants 
