Mat-forming species from eastern Argentina, southern Brazil, and Uruguay in dry rocky or sandy soil. This plant thrives in a variety of habitats, often found in subtropical to tropical regions, including grasslands, open woodlands, and along the edges of forests.

The plant typically prefers well-drained soil and can tolerate a range of light conditions, from full sun to partial shade. It is known for its small, clover-like leaves that are often bright green, and its flowers, which are generally small and yellow. Word of caution for the tropical crowd: Oxalis brasiliensis can spread easily and is sometimes considered a weed in agricultural and garden settings due to its ability to rapidly colonize areas. Its not totally hardy in my zone 7 so lives in a pot where it’s well behaved.

In its native range, Oxalis brasiliensis contributes to the biodiversity of grasslands and other open habitats, often appearing after disturbances that create open space. It is well adapted to the local climate and soil conditions of South America, allowing it to thrive in a variety of environments.

Photo by Mary Sue Ittner