| Orchids will grow in just about anything with small changes in how you care for it.
Porosity in a clay pot is a big improvement in the growing condition of an orchid. Plastic is used commercially for cost and ease in shipment.
The glazed pot (glaze is a glass coating over the pot) will work but not breathe as clay. Be more concerned about air circulation over the roots. I would use styro pellets in the bottom to prevent the medium from packing over the single drainage hole.
My wife recently potted some Oncidium, Phals and Paphs in Zisha pots (Blue Clay USA), which are more porous than regular clay. The improvement in the quality of the plants was noticeable. Unfortunately they are relatively expensive.
Since you are re-potting a Cattleya remember they will attach their roots to the sides of the pot on the inside and then as it grows over the side the roots attach tot he outside. I usually have to break a clay pot to re-pot a Cattleya.
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jerry  |