- Sagittaria sagittifolia is native to Asia and Europe. It is a perennial aquatic herbaceous plant that has become a crop pest around the world. It is very hardy and frost resistant. S. sagittifolia is used in cultivation for the starchy walnut sized tubers it produces.
- The leaves of S. sagittifolia are held on triangular petioles that vary in length with the depth of the water in which the plant is growing. The hastate leaves are large, very glossy and stand high above the water’s surface. The early, submerged leaves are ribbon like.
- The white flowers of S. sagittifolia have three petals with a purple spot at their base. There are three flowers in each ring or whorl. The flowers are monoecious and are insect pollinated. S. sagittifolia flowers in mid-summer.
- Fruits are achenes and ripen through the fall. S. sagittifolia can also reproduce vegetatively from whole, immature plants and from the underground tubers. Its seeds can float easily allowing it to be carried long distances on water currents.
- Ecological Threat
- Sagittaria sagittifolia is a federally listed noxious weed. It has been introduced to Australia, South America and North America. S. sagittifolia has been reported in Mississippi. The USDA Pest Risk Assessments rates it as medium to high in overall pest risk potential. S. sagittifolia can be found from Sub-arctic to tropical latitudes.
- Federal Noxious Weed Disseminules of the U.S. - USDA-APHIS
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
|Common Name Reference:|| Weed Science Society of America Common Names List|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|