The vinca isn't a problem here, but the ivy is. It has taken over large areas in the Portland, OR area.
We have some growing up an old Ash tree that we keep pruned so it won't bloom. Our neighbors have a long fence covered in it and they let it bloom. The birds carry the seed every where. It is now growing up trees along the field on the other side of our road. I also keep find tiny seedlings coming up everywhere on our place.
