Hey, so for past few weeks i noticed my larger larch'es inner and lower needles are falling out turning brown (photo). I was told that it might be spider mites so i used a chemical designed for spider mites in all stages.
But now after 2 weeks i dont see any improvement and i noticed little webs on a lot of branches (photo example) Also i have another larch, chinese elm and a juniper on which i also noticed some webs now.
I have a magnifying glass (3.5x) and i was trying to spot some little bugs but didnt see any, also i tried to shake branches while holding white paper but nothing has fallen on it... Now im not sure what to do should i wait? or should i use more chemical designed for spider mites now?
Also on two of the pictures you can see ends of needles shriveled up on larch, any idea what happend there?