Sagittaria spp.

USDA, NRCS. 2018. The PLANTS Database (http://plants.usda.gov, 28 March 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.
Illustration courtesy of University of Florida/IFAS Center for Aquatic and Invasive Plants. Used with permission.

What is Arrowhead?

Physical Characteristics

Stem:

Whorled
See details of each species

Leaves:

Submersed or emersed
Long leaf stalks
Bladeless or with unlobed or arrow-shaped blades

Flowers:

Produced all summer
Whorls of 3
3 sepals
3 petals
White or rarely pink

Fruit:

One seed
Does not open to release seed when ripe
Flattened

Pros and Cons of Arrowhead

The tubers of arrowheads are prized foods by ducks, geese, muskrats, and nutria. Seeds are sometimes consumed by ducks. Submerged portions of all aquatic plants provide habitats for many micro and macro invertebrates. These invertebrates in turn are used as food by fish and other wildlife species (e.g. amphibians, reptiles, ducks, etc.). After aquatic plants die, their decomposition by bacteria and fungi provides food (called “detritus”) for many aquatic invertebrates. Giant arrowhead is non-native and invasive, and should be eradicated, other species are beneficial and can be cultivated.