What is oxalis tetraphylla?

Oxalis tetraphylla, also known as Iron Cross or Lucky Clover, is a species of perennial plant in the Oxalidaceae family. Native to South America, particularly Argentina and Uruguay, it is commonly grown as a houseplant or outdoor ornamental plant in temperate regions.

Oxalis tetraphylla produces distinctive four-leaf clover-like foliage with dark green leaves that have a purple blotch in the center, giving it the appearance of an "iron cross." The plant typically grows to about 6-12 inches in height and spreads through underground rhizomes.

This plant is known for its delicate white or pink flowers that bloom in late winter or early spring. It prefers partial shade to full sun and well-draining soil. Oxalis tetraphylla is relatively low-maintenance and can be propagated by dividing the rhizomes or planting the bulbils that form at the base of the plant.

In some regions, Oxalis tetraphylla is considered an invasive species, as it can spread rapidly and outcompete native vegetation. As such, it is recommended to contain its growth in a garden setting to prevent it from becoming problematic in the wild.