I bought a myrmecatavola frances online. When I received, I cleaned the roots and they seem to all be dead. I emailed the shop and she said this:
Those are older part. They won’t make new roots till next growing season. The new growths will make new roots though. That’s what you need to focus on. Cattleya types always dumps its older roots when divided. Keep it in humid area to encourage rooting.
I would love to make sure this orchid grows, any suggestions on success?
Here are some pics after cleaning the dead roots off. 1 Picture is before I cleaned.