Hi. Queen Anne’s lace and mullein, though "naturally occurring" are not native wildflowers in our region. They are not on the top ten list of big invasive thugs, but both are non-natives that spread quickly and have a tendency to push out their native "equivalents." For example, yarrow or achillea millefolium, is the friendly native that would be better suited to a meadow than queen anne’s lace. I can’t honestly think of a good native substitute for mullein but I’m sure Margaret can. A great book for learning more on this topic is "Noah’s Garden" Restoring the Ecology of our own Backyards" by Sara Stein. Project Native in Housatonic, MA is a treasured resource for native wildflowers. Good luck with your meadow.