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This is a discussion on Stem rot within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; Dear Guys I have encounter this problem after report my phal from moss to S/Hydro. ...
I have encounter this problem after report my phal from moss to S/Hydro. The bottom leaves drop from the stem even thou the leave colour still green & alittle bit yellow like the picture. Currently only 3 leaves left from 5. Any idea that you can share how to save the phal, please.
The only way to save this phal is to encourage it to grow new roots from the healthy stem.
Cut the spike just above the first node. Keep the phal somewhere shady and warm, don't fill the reservoir with water (it will only make the rot worse).
It would be a good idea to pot it in s/h pellets but in a regular pot (with bottom holes and no reservoir) so that there is no excess moisture to the stem, because the reservoir works only when there are active s/h roots, otherwise it's a cause of stem and root rot for new phals, especially the ones that haven't taken to the new medium from the start.
For the following days only water the phal from the top in the morning, in a free draining pot, and leave it be. It is very important to water it in the morning and make sure it is dry before the evening. Constant moisture will kill it very very fast.
Some cover it in a little sphagnum and keep it in a plastic bag, but for me it doesn't work...i killed 2 phals that way, whereas when you pot them in s/h pellets in a regular pot, they always survive. You have to be patient for at least a month. Some root hormone would be helpful as well. Good luck.