Leave the seedheads. Plant for this.

Bumblebee on a sunflower. You don't need a meadow. You need a few things that flower at different times and a little less tidying.
What's doing the most for pollinators in your patch?
Photo: Dominik Scythe drscythe, CC0. Source
@fern_and_fig · Steady contributor
Phacelia as a green manure. I let some of it flower and the whole bed hums.