Help phalaenopsis orchid has yellow mushy leaf!
Hi, I'm new to growing orchids, I was given the phal I have now for my birthday in October, immediately went onto the American orchid organisation site, and surfed the web for proper care. I have been keeping it in my west facing bedroom at the back of the room where it gets very diffused light. I have been watering it every week or so, maybe missing a week or several days every now and again when the medium was still wet. I have also had a saucer of water with gravel (cleaned) underneath the phal.
When I first got it, one of the bottom leaves had a little yellowing on the tip. This has progressed up the leaf over the past two months. The phal finished blooming about mid November and I have left the stalks on as I have not any ideas how to sterilise it after cutting.
If anyone has any ideas what might be wrong, help would be appreciated.
Thanks
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