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03-26-2015, 01:00 PM
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Join Date: Aug 2013
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Location: Baton Rouge, La
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Orchids and Humidity
I was wondering if there have been any studies on growing orchids and humidity. I.e. the AOS cultural sheet for Cats specifies 50-80%. I believe that is taken from habitat ranges. I did a brief internet search but all I just find clutter. Is there an optimum value, etc?
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03-26-2015, 02:03 PM
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All orchids benefit from a decent humidity level, but there is absolutely not an optimum for all orchids.
Something in the neighborhood of 50%-60% or so will be adequate for most, but there are quite a few that do better with much higher levels.
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03-26-2015, 02:37 PM
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Thanks Ray but are there any scientific studies to corroborate this?
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03-26-2015, 05:29 PM
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Thank you. That's an interesting article
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03-27-2015, 10:28 AM
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This is a very interesting article. However, from my understanding, the humidity was kept constant in the experiment.
Basically the only purpose for a humidity range is to prevent plants from dehydrating. I'm not sure why a high humidity range is specified. To prevent mold from forming?
Most of the Orchids I grow (Cats, Encyclias Vandas, Phals) are weak CAM plants. If they are in CAM then humidity wouldn't matter since humidity at nights is higher. When does CAM kick in?
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03-27-2015, 10:40 AM
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Good question
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03-27-2015, 02:54 PM
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Quote:
Originally Posted by Ray
All orchids benefit from a decent humidity level, but there is absolutely not an optimum for all orchids.
Something in the neighborhood of 50%-60% or so will be adequate for most, but there are quite a few that do better with much higher levels.
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And, while it may not be "optimal," there are many that can handle far lower RH levels with little problem.
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03-27-2015, 02:59 PM
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there is also another link in this forum-
Are orchids C3, C4, or CAM plants?
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