Variable flatsedge has a broad native range encompassing various regions across Africa, Asia, and parts of Europe. In contrast, variable flatsedge has been introduced to the Americas as well as certain Pacific and European areas. While variable flatsedge thrives in its indigenous territories without significant ecosystem disruption, in regions where it is not native, variable flatsedge may have an impact on local ecosystems, particularly in areas where it is considered invasive.

Variable flatsedge is a herbaceous sedge native to tropical and subtropical areas of Eurasia, Australia and Africa. It is listed as one of the worst weeds in the world, and can be very problematic in crop production, especially rice.

Variable flatsedge can be managed by hand-pulling and tillage. It is best to remove it early, before the plants mature and produce seeds. This can be quite complicated in tropical regions, as variable flatsedge can germinate and bloom throughout the entire year in these areas. Chemical control is also an option, but keep in mind that herbicide application is not advised in aquatic habitats due to their toxic effect on aquatic fauna and flora. Good weed management practices and ensuring healthy establishment and development of crops can significantly reduce the negative effects of this plant in cultivated fields. If you opt for chemical control, first consult an agricultural expert to determine which active compound is the best for your geographical area. Carefully read the manufacturer's instructions on the product label, and perform the treatment on a windless day to avoid drift.