Perhaps a good airing out would help, you may have left too much moisture in the sphag... S & B doesn't always work, either...
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Hi all,
I have a Phal that I shouldn't have bought off the sale table....unhappy roots, mostly rotten that I have trimmed off. I decided I didn't have a ton to lose and to try the sphag and bag method to grow some roots.
I'm using a gallon zip lock, couple hand fulls of NZ sphag that I soaked first and wrung out....and I reduced the amount of light (not a ton). About a week later I'm seeing mold growth on the arial roots.
Suggestions? Less light? How much less, if so?
Thanks!
MtEquine
Perhaps a good airing out would help, you may have left too much moisture in the sphag... S & B doesn't always work, either...
I have heard that not fully closing the bag is a good way to ensure that you still get a fairly high humidity but with the added bonus of some air being able to be replaced... maybe partly close the top of the bag?
Try some peroxide on the roots.
Julie
I've noticed when humidity in the bag is higher than 90%, you will get mold on the roots. Even with peroxide, the mold will come back in 2 or 3 days. Leave the bag open is the way to go.
Qing
I have put one in a small pot with Spag. and made a tent over it with plastic .
Never had any luck spaggin and baggin . What I got was rottin rootin an musty moldie .. Gin
Maybe sphag and clay pot. That will allow aeration, yet still keep things moist. Rooting hormone wouldn't hurt either.
Julie
Thanks for all the suggestions everyone....will play around and report back.
I usually use the S&B method with plants that are totally dehydrated to the point where the leaves kind of look like wrinkled skin, and even then I wash the bag out with dilute physan, or another antifungal solution, I soak the sphag in the solution as well, ring it out, rinse, then ring out again. Then I lightly spray the plant with the dilute physan, but this time I dilute it at half the recommended dosage. Depending on what type of orchid it is, I either leave the bag open for 10 minutes at night, or 10 minutes during the day to help with the C02.
I never used to have success with it until I ditched that old notion of not giving them as much light as usual, giving them regular light has improved my success rate with this technique.
-Alessandra
Sunlight does inhibit mold...
Julie