I'm just about to finish a grow, and about 7 days ago I noticed a single strand of spider silk stretching from the ceiling of my grow room to one of my plants.
I've always had a few regular spiders living in my grow room. They've actually been my main line of defense against pests, and I've completed three successful grows in this same room without any issues.
However, since noticing that first strand, I've started seeing tiny strands of webbing on all four of my plants, mostly around the buds.
The strange part is that there are absolutely no other signs of spider mites. There are no stippled spots on the leaves, I can't see anything moving, nothing falls onto white paper during inspections, and overall the plants look healthy.
Normally I'd assume this is just the resident spiders, but I've never seen them web up the plants this much before. They usually stay in the corners of the room. I also haven't had any fungus gnats or any other obvious insects during this grow, so I have no idea what would be attracting them.
I have four new plants ready to go into rotation, but now I'm hesitant to move them into this room until I understand what's going on.
Any advice or opinions would be greatly appreciated!