The word “meadow” conjures images of wide expanses of land, but a mini meadow — a kind of informal flower garden started with seed sown directly into the soil — can be any size; plus, it’s fun, easy to grow, and good for the planet. With as little as 50 square feet and for less than $20, gardeners can plant a colorful meadow that demands little in the way of space, mowing, or maintenance, uses less water than a traditional lawn, and provides habitat for pollinators — not to mention a natur...