Poa annua, or Annual Meadowgrass is very common on bare ground of any kind, for example gardens, waste ground, paths and sand dunes. It is often found in paving cracks where it survives trampling. It very often has crinkly leaves across its width due to a lack of ribs. It can flower at any time. Can be used on golf putting greens, creating a fast surface, although many have now been converted to Bentgrass.