St. Augustine Grass (Stenotaphrum secundatum (Walter) Kuntze)

↑Range - Expand

Legend	Color
Native
Expanded
Native or Not Present
Native or Expanded
Expanded or Not Present
Native or Expanded or Not Present

This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.

This species has a mostly pantropical distribution, but has expanded into new areas due to humans, both through intentional planting as a turfgrass, and because it can survive and spread on its own in mowed lawns. Its exact native range is not known and different authors report different ranges. Our map, which shows considerable uncertainty, considers it native to parts of the southeastern US but having spread both north and west. We have marked the entirety of its new range Expanded because it is largely contiguous with the native range. It also is found in Mexico with both native and expanded populations; we have yet to build this portion of its range map.