Are you going to make sure that the wildflowers planted are actually things that would grow naturally in that area and habitat? If not, is the idea to introduce 'wildflowers' that aren't actually wildflowers at all, but artificially introduced species from other places and other habitats? That just gardening isn't it. Nothing wrong with gardening of course, but it's not really wildflowers, which you would get by just letting the area run wild.