The genus Carex is almost incomprehensibly large. Around 2,100 species of grass-like perennials fill in the wet margins, the shaded woodland floors, the alpine meadows, and the roadside ditches of every inhabited continent. The genus name itself is Latin for cutter, a nod to the sharp triangular stems that distinguish sedges from their grass and rush cousins. That triangular cross-section, combined with the characteristic bottle-shaped utricle surrounding each ovary, is the family's fingerprint. Ecologically, sedges are foundational. They feed caterpillars, shelter insects, stabilize banks, and filter water. In cultivation they are a more particular proposition. Most resent overfeeding and overwatering, recover slowly from hard cutting, and prefer that gardeners leave them largely undisturbed once established. Light foot traffic is manageable for some species; submersion is not. They are slow-growing and sensitive to soil conditions in ways that ornamental grasses typically are not, but the reward for patience is substantial: year-round structure, a breadth of foliage color from silver-gray to rich copper-bronze, and a quiet animation in the lightest breeze that few plants can match.