Thomas Moore,
The Orchid Album, Volume 2
“ A little sphagnum moss placed on the top of the peat is beneficial to them, if it can be kept in a growing condition, as it maintains a nice moisture about the plant. If the moss should become decayed it must be removed, and some fresh living sphagnum applied. The plants will grow without the moss, but we prefer to use it. Avoid overpotting, which is often detrimental to them, for they do not require too much of the potting material about them; the pot should, in fact, be just large enough to hold the plant, and to admit a small quantity of the material being placed around it. ”
