Can I grow my orchids without any medium?
I'm pretty new to orchid care, I bought a mix of orchids most are dendrobiums and one is a cymbidium. I had them in hanging baskets outside in the shade planted in chunky pine bark and perlite with slow release orchid food. They didn't grow much at all but they stayed looking very healthy.
I live in Australia and it's late autumn now and getting very cold at night and also some tiny caterpillars that dangle on strings have been hanging around them so I decided to dig them out and bring them indoors. The roots look very healthy and have grown a lot. I washed them off and I have them laid out on a towel.
So basically my actual question is can I grow them indoors without any kind of potting medium? I have an old small fish tank and a plant grow light that I can fit them all in, I want to put them in there over winter in my bedroom. The tank holds humidity well and has some holes in the roof for ventilation. If I just mist the orchids daily and also give their roots a mist of water and liquid fertilizer occasionally will this be ok for a few months?
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