Repeated misting in a greenhouse environment
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  #1  
Old 03-08-2020, 06:22 AM
ArronOB ArronOB is offline
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Default Repeated misting in a greenhouse environment

Hi. I was browsing a publication of the NZ Miltonopsis Society, which this link may or may not point too
http://www.odontalliance.org/affilia...%20no.%203.pdf

What interested me was an article on page 12 by a grower on the NSW Central Coast (where I live) with a wide variety of orchids growing in unheated shadehouses who says he has a very fine misting setup that comes on for 30 seconds every half hour between 6am and 6pm, so 24 times per day.

Bear in mind that this is in environment already on the humid side of average.

This is he first time I’ve heard of such frequent ‘misting’ for shadehouse growing.

Has anyone else tried this, and what was the result.

Incidentally, further down he says he uses an ebb and flow system for his paphs. Again, first time I’ve heard of that with orchids. My experience of ebb and flow was in hydroponic systems - full hydroponics not semi. Can anyone speculate on exactly how he uses the ebb and flow ?

Last edited by ArronOB; 03-08-2020 at 06:31 AM..
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  #2  
Old 03-08-2020, 12:49 PM
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Ray Ray is offline
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There’s misting, and then there’s misting...

My only real concern would be if the plants stayed wet.

Semi-hydroponics IS ebb and flow, but operated manually and less frequently, don’t you think? The biggest difference, in my opinion, is that the water in S/H is “one and done”, rather than being shared (potentially with pathogens) in a common, repeatedly-applied reservoir.
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Old 03-08-2020, 01:54 PM
early early is offline
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Quote:
Originally Posted by Ray View Post
There’s misting, and then there’s misting...

My only real concern would be if the plants stayed wet.

Semi-hydroponics IS ebb and flow, but operated manually and less frequently, don’t you think? The biggest difference, in my opinion, is that the water in S/H is “one and done”, rather than being shared (potentially with pathogens) in a common, repeatedly-applied reservoir.
Thanks Ray. I was being lazy re-poured the drained water from the S/H plants back over that orchid or the neighboring ones.
This AM I check that drained water for pH and it was greater than 7. In the future I will toss all of that and keep my well water 5.5 to 6.5 nearby and with weak
20-20-20 and I have switched from trying to lower my over 8 well water with vinegar instead of citric acid power since it is easier for me to measure.
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Old 03-08-2020, 03:53 PM
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SouthPark SouthPark is offline
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Misting should be ok, as long as there's adequate air-movement in the area to avoid issues with certain kinds of organisms growing - related to fungal or bacterial issues.
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