insects or fungus on shrubs/roses

Question

I noticed groups of dead leaves nesting together in the branches of my rose bush, and
also found a couple in my hydrangea bush. The leaves appear to be bound together by a
fine web. I have and removed all of them and sprayed the bush with insect spray. What are these “nests” and what else should I do?

Answer 1

Could be spider mites.
https://www.gardeningknowhow.com/.../spider-mite-treatment.htm