There are several species of oxalis that are attractive garden and indoor plants. But there are also some species that can become difficult weeds to control, due to their many tiny bulbs (bulbils) and seeds. The three main weedy species are Oxalis corniculata (creeping woodsorrel), Oxalis debilis (pink-sorrel or pink wood sorrel) and Oxalis latifolia (broadleaf wood sorrel).
Oxalis corniculata can be annual or perennial, its stems rooting where they touch the soil. It produces numerous seedpods and seeds, which are scattered over a long distance as they are forcibly ejected from the seedpods.
Oxalis debilis rarely produce seeds, but the numerous tiny bulbils spread easily when the soil is cultivated and can remain dormant for several years.
Oxalis latifolia spreads both by its forcibly ejected seed and by bulbils.
The leaves are eaten or added to drinks for their acidic taste.