Leucanthemum

The classic wild white meadow daisy — the "moon daisy" or "marguerite" — an easy, long-flowering perennial that carpets meadows and rough grass with pure-white, yellow-centred flowerheads from late spring through summer. Spoon-shaped, toothed basal leaves give rise to long, wiry stems topped with single daisies that are a magnet for bees, hoverflies, and butterflies and make a fine cut flower. It naturalises beautifully where its spread is welcome — but it self-seeds freely and creeps by rhizome, and across North America, Australia, and New Zealand it has escaped into an invasive pasture weed (declared noxious in several US states), so it belongs in a wildflower meadow or rough grass rather than a formal border. The young leaves and flower buds are edible as a traditional salad ingredient.

The classic white-and-yellow garden daisy — a clump-forming herbaceous perennial bearing showy single flower heads of white ray florets around a yellow central disc from midsummer into fall. A garden hybrid bred by Luther Burbank in the 1890s near snow-covered Mt. Shasta in northern California, it grows 2-3 feet tall and is a mainstay of the perennial border, cottage garden, and cutting garden. Easily grown in dry-to-medium, well-drained soil in full sun, it is drought tolerant, attracts butterflies, and is resistant to deer and rabbit browsing.