Quote Originally Posted by hcubed View Post
Update: I think I finally figured it out! I finally got a new growth to grow big enough that I could see actual bites taken out of it. And not too long later I caught a glimpse of the culprit - a tiny snail!

No idea where THAT came from, but snail removed and growth is now progressing well. Plus I have a spike with 11 buds on it - hurray!
I have seen similar snails amongst my orchid roots. Very tiny, laterally compressed and dark tan to dark brown.
They prefer to hide among the potting mix and nip on fresh root tips and new growths that are still tender.

Good news is that they dont seem to have high populations like slugs and garden snails. Bad news is that they are so hard to spot unless you start to see damage on the plants.

For my greenhouse, I use a snail/slug killer powder and sprinkle on top of the potting mix regularly, paying special attention to plants that are developing new roots and new leads.