Oxalis lasiandra aka Mexican Shamrock

Oxalis lasiandra is a perennial in the wood sorrel family, Oxalidaceae. The RHS calls it woolly-stemmed wood sorrel. Its native range lies in Mexico, in southern North America. It is not native to Britain or Ireland. The supplied sources give no details about its wild habitat. Plants For A Future lists it for use in cultivated beds. Its stated size suits small planting spaces rather than large displays. It reaches about 1 foot (0.3 metres) tall. Its spread is about 0.7 feet (0.2 metres).

The plant flowers from July through October, according to Plants For A Future. This gives it a flowering season across summer and into autumn. Each flower has both male and female organs. The evidence does not name its pollinators or describe its fruit. Nor does it give a species-level account of flower colour. Details of leaf shape and stem structure are also missing. The RHS includes broader features of the genus on its page. Those features do not establish this species' own leaf or flower form.

Plants For A Future lists sandy and loamy soils as suitable. It prefers moist ground rather than a dry site. It can grow in light shade or in full sun. The listed soil range includes mildly acid, neutral, and mildly alkaline conditions. These options allow some choice of planting site and soil reaction. The source gives USDA hardiness zones 8–11, but also calls the plant frost tender. Its separate UK zone number does not supply an RHS hardiness rating. The evidence gives no winter protection method or detailed watering schedule.

Plants For A Future lists seed as a means of propagation. It does not provide sowing dates or germination conditions. It marks the plant as having no weed potential. No species-specific pest or disease problems appear in the supplied evidence. Leaves appear under edible parts, yet the same source scores edibility zero out of five. That mismatch does not support treating it as a food crop. The source records no known hazards, which does not prove safety. It lists no known medicinal or other practical uses. Both of those use ratings are zero out of five.