Phalaenopsis in water culture
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  #1  
Old 05-10-2009, 02:08 AM
AboutOrchids AboutOrchids is offline
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I think you have both algae and moss. That is moss that's still growing on the roots from its previous potting. The algae in the vase is what's making the water green, and it's a different plant.
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  #2  
Old 12-03-2009, 04:40 AM
Wrebbitrocks Wrebbitrocks is offline
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how is it that none of the plant parts have rotted even thought they are sumberged. i have always been told to keep all plant parts dry by nightfall and these are like in water permanently and remain wet through night. i dump out the water on my vase phal everyday at 4 and airdry the roots with a fan until theyre dry again before the temps start to drop. can i just leave it in the water?
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Old 12-03-2009, 12:52 PM
Undergrounder Undergrounder is offline
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Quote:
Originally Posted by Wrebbitrocks View Post
how is it that none of the plant parts have rotted even thought they are sumberged. i have always been told to keep all plant parts dry by nightfall and these are like in water permanently and remain wet through night. i dump out the water on my vase phal everyday at 4 and airdry the roots with a fan until theyre dry again before the temps start to drop. can i just leave it in the water?
Wrebbit how cold does it get at night? Unless you're talking about really cold nights, then for those most part, the temperature shouldn't really matter.

Water itself doesn't cause rot. A whole bunch of things can contribute to rotting roots, but water is never directly the culprit. Water is in fact vital to root and plant function. And Water is H20 - One third oxygen. So there's no reason why roots can't grow happily in water.

The general myth that orchid roots have to dry out periodically is a well-meaning myth. Well, for most species anyway.

Periodic drying can be good to control the rate of decay for organic mediums like bark and sphagnum moss, it limits fungal growth and re-oxygenates the mix. So in that sense, period dryness can be good for the health of the organic medium that the orchids grow in.

But the roots themselves don't need period drying. And if you grow orchids in inert media, like clay balls or perlite (used in hydroponics), or if you grow them with no media (like vase water culture), you can grow orchids without worrying about dry periods.
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