Rescuegrass is native to South America and has been widely introduced to regions across several continents, most notably in temperate zones. It has found its way into various parts of Europe, Asia, Africa, and North America. In these areas, rescuegrass has adapted to a range of environments, often thriving in grasslands and disturbed areas.

Rescuegrass can induce mild allergic reactions in some people, causing hayfever or skin rashes. Additionally, it accumulates nitrates, potentially creating toxic effects if ingested by humans.

Rescuegrass is native to South America. It has been introduced worldwide as a forage crop, and is now considered invasive in 57 countries across North America, Oceania, Europe, and Asia. It is also a weed in agricultural contexts as it establishes readily in disturbed areas, including agricultural fields and gardens. Rescuegrass also tolerates a variety of temperature and soil conditions, and when combined with its ability to be distributed by wind, animals, and human activity, it can quickly spread over large areas. When control of rescuegrass is desired in agricultural contexts, decreasing row spacing, delaying seeding, and deep cultivation techniques can be effective. It has developed resistance to some herbicides, but certain herbicides can still be effective.

The best time to remove rescuegrass can vary, but generally, an early spring or late fall removal is preferred. This is because it's important to get rid of the plant before it reaches it's flowering stage and starts spreading seeds. Here's a guide for organic or non-scientific methods of control: