What does nut grass look like?

Nut grass, also known as sedge, typically has slender, green leaves that grow in a clumping formation and can reach heights of 12 to 36 inches. Its stems are triangular in cross-section, and it produces small, spike-like flowers that can be yellow or purple. The plant often has a characteristic underground tuber, which contributes to its invasive nature. Nut grass tends to thrive in moist, poorly drained soils and can be a nuisance in lawns and gardens.