How does oxalis spread?
Oxalis spreads via seed or bulbils: • Oxalis corniculata often grows as an annual, regenerating each year from seed. The stems do root where they touch the ground but the main means of spread is by seed, ejected forcibly from the ripe seed pods. • Some of the perennial bulb-forming species, such as the tropical American Oxalis debilis, rarely produce seeds, but the tiny bulbils are easily spread when digging up the plant and can remain dormant in the soil for several years. • Oxalis latifolia reproduces both by seed and by bulbils formed at the end of the rhizomes (creeping underground stems).
