(Scottish) Vine Weevils-when to apply nematodes?
Hi-really sorry as this has probably been discussed many times but I am a bit worried about an infestation of vine weevil and I was wondering when best to apply nematodes? We had a bit of vine weevil damage last year and I just sort of hoped it would go away but the notched leaves are everywhere this summer, I have found quite a few and am keen to get on top of the problem ASAP! I emailed a nematode company for advice and they recommended a spring application but I’ve read autumn can also be an effective time to do it. We are in Scotland so I would like to do it before it gets too cold-is the end of this month too early in anyone’s experience? I’ve dug about around the notched hydrangeas and azaleas but not found any grubs do possibly too early? many thanks!