I never had curculio weevils the first 20 years I lived here. Then I planted a row of rugosas and the weevils came flocking. After I pulled out all of the rugosas, they left. A few years later, however, they discovered my gallicas and returned in hordes. They've now moved on to the rest of the OGR's and most of the modern roses. Hand-picking just doesn't work in a garden like mine. It's beyond the abilities of one person. I'd have to hire lots of people to do it, and I frankly can't afford it. The only good thing about them is that they have a short lifespan and only attack the first flush of roses. That means that I might as well pull out the gallicas and other once-bloomers, of course, but they represent only a small percentage of my roses.