Plant: Sweetflag Grass / Acorus

Japanese sweetflag is a clump-forming, grass-like plant grown for its long, narrow leaves. It grows up to 1 foot tall and spreads by rhizomes into a ground cover, thriving in very wet or even partly submerged soil in full sun to part shade, with some afternoon shade best in hot summers. Plant 8 to 12 inches apart along streams, ponds and wet spots, as edging, or in containers kept moist; dry soil can scorch the leaves.