plantladylin said:I'm far from an orchid expert but I don't think Miracle Grow Potting mix would be the correct medium for any orchid unless it's a terrestrial type that grows in the ground. Moth Orchids are epiphytic by nature and require good air circulation around their roots to do well; heavy soil will suffocate the roots which may be the cause of your plants leaves yellowing.
Here's the American Orchid Society culture sheets for Moth Orchids (Phalaenopsis)"
http://www.aos.org/orchids/cul...
http://www.aos.org/orchids/cul...
We have a few very knowledgeable orchid growers on this site who will be able to offer good advice, @Ursula @BigBill
Ursula said:When you say "with barely any true soil" I cringe a bit. Perhaps you picked up a mix which is appropriate for terrestrial Orchids, but not for an epiphyte?
I probably would remove the companion plant while placing the plant into a proper medium. Picture this Orchid growing in nature in leafy compost of sorts in a tree, slightly tilted so the rain water doesn't collect in the crown.
When you talk about yellowing leaves - how yellow? only old leaves turning yellow? How much light does the plant get? Too much?
A picture would help.
Ursula said:I see an older yellow leaf, I wouldn't worry about. If new leaves also start to turn yellow, that might point to too much light or roots turning south or not enough water or "whatever" . But yes, you can easily burn a Phal in a South window in sunshine.
Ursula said:I am sorry, but I could not judge the amount of light just looking at this. I remember seeing gorgous, well grown Phals everywhere in Germany at a visit a few years ago. They all had one thing in common, lace curtains! I don't know which way all those windows faced, but I would think the lace was a perfect light filter. If one might imagine what it takes to duplicate that here and choose the similar amount of light?
plantladylin said:There's a thread here on our Orchid Forum with good information regarding Phal Orchids: The thread "🗣 Starting out with Phals/Supermarket Orchids 🛎 ✍️" in Orchids forum
BigBill said:Phalaenopsis orchids should have NO sunlight shinning on it with the possible exception of a little morning light for no more then an hour.
You should NEVER grow any orchid with a companion plant of ANY type including another orchid. Their watering requirements are just way too different!
Phalaenopsis grow equally well in clay or plastic, the watering frequency is adjusted for the pot type.
Direct sunlight = any sunlight that directly shines on the leaves of the plant.
BigBill said:One reason you do not grow an orchid and a philodendron together is that the orchid ends up being in a pot that is too large for the root system. The orchid does not get the proper watering and it's health suffers.
An orchid is hard enough to learn how to grow for beginners or novices. And therefore you don't grow them together. Each in its own pot.
But if you want to grow them together be my guest. You're the one who asked how your orchid is doing. We tell you, advise you and if you choose to ignore the advice then it is on you. All we are trying to do is help.
BigBill said:I have given you a logical reason and you are just determined to do what you want to,
I bow to your thousand of seconds of orchid growing experience.
If you think I am "salty", you have no idea. And by the way, #832.