Try raising the temperature and lowering the light for Phals that aren't growing.
---------- Post added at 08:06 PM ---------- Previous post was at 07:51 PM ----------
Quote:
Originally Posted by Clawhammer
I'd love to hear your thoughts on sphag ES.
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What Dolly said. Don't ever completely soak the moss, except for orchids that use a lot of water, and it's during their growing season. Phals use much less water than most other orchids. With many Oncidiums, and well-rooted, actively growing Cattleyas, you can thoroughly soak the moss in summer. If healthy, they take up so much water it will dry rapidly. Not Phals.
Let the moss get quite dry for Phals. The top should be crisp. Run water quickly over the top of the moss, 1-2 seconds only. You will wet only the top. The water will diffuse through the moss, leaving it very slightly damp throughout, but still well aerated. Most people only need to water Phals in moss once every 7-10 days with this method, less when it's cooler in winter. If you goof up and soak the whole root ball, take the plant out of the pot and set the root ball in front of a fan to dry it.
Moss doesn't work well for Phals if you keep your house cool in the winter. Evaporative cooling makes the roots even cooler.