Sparganium subglobosum, commonly known as Narrowleaf Bur-Reed, is a perennial herb that is deciduous or semi-deciduous, depending on the climate. It is native to marshes, shallow ponds, and slow-moving streams in East Asia, Southeast Asia, thePacific Islands, Eastern Australia and New Zealand. This plant typically reaches a height of 1-3 feet (0.3-0.9 meters) and spreads up to 3 feet (0.9 meters). Narrowleaf Bur-Reed has a clumping growth form with narrow, strap-like leaves. It produces spherical flower heads that are greenish-white and appear in the summer. The flowers are not particularly showy but are interesting upon close inspection.

Narrowleaf Bur-Reed is valued for its ability to thrive in wet conditions and is often used in water gardens, along pond margins, and in naturalized wetland plantings. It provides habitat and food for aquatic wildlife. In cultivation, it requires full sun to part shade and prefers to be grown in shallow water or consistently moist soil. While it is not drought-tolerant, it is relatively low maintenance when its water needs are met. Gardeners should be aware that it can spread vigorously in ideal conditions and may need to be managed to prevent unwanted expansion.CC BY-SA 4.0