I respectfully disagree with the advice about no fan. First, good humidity. Then, if I had the choice of R/O, rainwater, or tap water, fertilizing, or a fan... the fan would win hands down. "Sealing" in a plastic bag with no air flow is a good way to finish off the plant.
I'm aware we're talking about a cutting off a vanilla vine. I know it requires RH around 80%. The air roots need to be watered or misted, then dry rapidly.
A vanilla vine (orchid) is part terrestrial, part epiphytic. The air roots on this cutting aren't getting enough moisture. The medium is likely being allowed to dry too much before hydrating again. It's a cutting. We have no idea what the portion of the cutting that's in the medium looks like. Were there air roots on the cutting that's in the medium?
Get rid of the pole for now, concentrate on getting terrestrial root growth and keeping the air roots alive, although the ones I see look pretty dried up.
Edited to add: I went back to the original post. It appears you're growing on covered shelving (like with the plastic covering?) so you already have the "enclosed" part under control. I would bet your humidity isn't high enough. Or don't get rid of the pole, and make sure the moss on it stays moist all the time. Get your fan set up and blowing in there. Could you have it point to the "wall" of the enclosure and let it blow hard enough to circulate that air movement back around? The "tumbling" effect of air we're talking about?
Last edited by WaterWitchin; 08-19-2019 at 10:47 AM..
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Hybrid Mode
