dense collection of stems rising up to 3 meters above the ground. This stem is coupled with a
finely sized and highly dense root system extending 3-4 meters below ground as shown in Figure
1. Both of these factors make Vetiver extremely resistant to erosion and highly tolerant of flow
conditions in wastewater treatment applications where the plant may be partially submerged.
Furthermore, Vetiver will respond to soil burial by growing new roots, making it ideal for
applications involving silt settlement. Physiologically, Vetiver is characterized as a hardy plant.
It is resistant to both drought and flood, as well as tolerant of a wide range of temperatures and
soil conditions including pH, alkalinity and other factors. Vetiver is also resistant to pesticides
and herbicides. Finally, Vetiver grass’ ecological characteristics are important to consider
regarding treatment application. The grass grows best when there is no shading, and can
contribute positively to erosion control and slope stability, acting as a nurse plant in areas where
soil has been disturbed. Furthermore, the USDA considers Vetiver grass to be non-invasive and
sterile. Vetiver grass’ adaptability ranges are listed in Appendix A.