A fine-bladed, cool-season turfgrass — creeping bentgrass above all — that produces the smooth, dense putting greens of the northern United States and the British Isles. It tolerates mowing down to an eighth of an inch (0.125"), and its upright, tightly knit growth rolls putts true with almost none of the grain a Bermuda green shows. More than 40 creeping bentgrass cultivars are on the market, bred for density, disease resistance, and holding off Poa annua invasion. The trade-off is climate: bentgrass is happiest around 60–75°F and suffers through long, humid summers — which is why Florida greens are Bermuda, and why a trip north often means the purest putting surfaces you will ever see.