You are right, Zuzu. That's why I dis-bud all through from now until the end of June. If I quit dis-budding earlier, I have the problem you have described. I might see a few curculios in July, but that's it.
At least I know they are not breeding in my garden and I can have a good first flush ... or most of one. It depends on the weather as to when the curculios come up out of the ground. With a shorter growing season, losing that first flush was a disaster to me.
There's another benefit for me in that dis-budding forces the rose to push out more foliage which helps them get through the high temps in my climate during the summer months. I don't have the ocean influence that you have.
The roses also push out more buds. When I stop dis-budding and allow them to bloom again, it's almost like having a second first flush. By then, I have gotten more weeding done and more mulch down and I truly can enjoy the garden.
Smiles,
Lyn
