Are my plants infested?
A while back I repotted my orchids, then I began to notice some white webbing between the bark potting medium. There is no webbing on any of my plants. On that orchid there doesn't seem to be that white spotted look on any of the leaves, but on the other orchid that sat right next to it there does seem to be the beginnings of a weird patch on one leaf. I've looked and I've looked and I just can't see any bugs anywhere. I've done the paper test and nothing.
In the same room there are many other plants and some have begun to get some raised bumps on the leaves. There are also a few spots on the leaves that look the opposite of raised, whatever that is... Kind of hollow holes, except that there isn't actually a hole in the leaf. Again, I did the paper test and nothing showed up. Once I did get a few dark spots but they remained still and I examined them under magnification and couldn't tell anything. But they never moved.
I'm really suspicious about that one orchid with the webbing in the medium because before I repotted it it was growing a new leaf and roots pretty fast but then after repot and recover time its growth has slowed a lot.
What's your take on this? Do you think I have an infestation, and if so, what is it? Aren't you supposed to be able to see spider mites when doing the paper test?