Groups of spartina form thick grassy clumps. These can spread sideways from underground rhizomes (continuously growing underground stems) or by overground side shoots. Spartina can form in estuary environments, causing a build-up of sediment. This can increase the risk of flooding and also change the habitat for wading bird species and other estuary flora and fauna.

• Size: Commonly grows up to 1 metre tall.
• Leaves: Broad, pointed leaves that grow from the base of the stem to the top.
• Seeds: Several long finger-like seed heads at the top of the stems. Seed falls into the water and floats away.
• Distinctive feature: Stiff, upright stems growing from thick underground rhizomes in shallow saltwater.
• Root system: Thick rhizomes that produce rapid new shoot growth; new plants can grow from root pieces.
• Habitat: Shallow saltwater environments, particularly estuaries. In Otago, scattered infestations occur in Pleasant River Estuary (between Waikouaiti and Palmerston), Karitāne Estuary, the Lower Taieri Gorge, and Catlins Lake.

While ORC controls spartina in Otago, if you receive a written notice from an Authorised Person you must eliminate spartina infestations on the land that you occupy.

www.orc.govt.nz/spartina