We leave part of ours all summer, and mow it once tge wildflowers are done, so that it's nice and short for primrose time. Just mow a windy path up to the compost heaps, and around the edges. Definite increase in butterflies, and the cats love stalking through it. I have put some ox eye daisies in this year, there's already a riot of other stuff..
The flat bit near the house gets cut more often so we can sit out, and there's an intermediate area between the two areas, which is cut a few times.