Quote:
Originally Posted by aries23
Im quite confused aout putting it in water wouldnt it rot?
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No, not necessarily, rot, or the bacteria that causes it, needs air. If you have ever had a wood fence or something held up with a wood post, what you would find is that the post rots the MOST a few inches above and below the ground line. That is because that is the region that cycles between wet and dry. Below a few inches it will stay wet and above and few inches it will dry out too fast for the bacteria to proliferate well. If you go to the beach you will see this same effect on piers, etc. where the wood that is submerged and that well above the water line is solid and rots very slowly when it does. But at the water line the most decay and rot occurs.
When I use the "put the roots in water" technique, I remove all the dead roots and fiber I can so there is less for any rot to live on. Then I watch the water level to keep it as constant as I can. Putting a cover over the container will keep the moisture in and water level constant. I try to keep any leaves out of the water but on orchids like a dendrobium where the stalk is devoid of leaves, I will allow the lower part of the stalk to stay in the water.
I have rooted woody hibiscus, figs and even got a rose to root this way once. So that is how I came to try this on my orchids. Given that orchids do not like to "have their feet wet", I do this mostly to orchids that have NO roots - after all they will die anyway with no roots - so desperate measures for desperate situations. Once I get a big enough root system, I will then pot it. I currently have two phalenopsis that lost all but one root. I have them still potted BUT they get special treatment. Every AM and PM I mist the leaves top and bottom so they are wet just to the point of dripping. keeping water out of the crown (top where the top leaves start). If they fail to respond, then they will get the "in the water" treatment.