Globe Sedge ---Cyperus croceus and other common lawn weed sedges
They're all natives (I think) but are they friend or foe in the meadow?
Will they take over? Will they be shaded out by taller grass/flowers eventually? Will they "blend in"? Could they actually be beneficial to a meadow in some way?
Note: none of mine are "nut sedge." But they are fairly aggressive sedges that thrive in dry to moist extremely sandy soil in full sun.