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I was worried there for a minute, Lin. Then it occurred to me that this isn't email!
Humidity is part of the moisture-retention balancing act. Roots take it in, metabolic processes and warmth drive it out. The higher the humidity, the less driving force for loss through the leaves, reducing the stress on the plant. Some plants - notably phals - have evolved leaf structures to limit losses, others have not, so the maintenance of high humidity is essential to their survival.
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Ray Barkalow
First Rays Orchids www.firstrays.com
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All that is gold does not glitter,
Not all those who wander are lost;
The old that is strong does not wither,
Deep roots are not reached by the frost.
-J.R.R. Tolkien, LOTR, Fellowship of the Ring
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