Oxalis

Oxalis triangularis

Physical Characteristics

Oxalis triangularis is a PERENNIAL growing to 0.2 m (0ft 8in) at a medium rate. See above for USDA hardiness. It is hardy to UK zone 9 and is frost tender. It is in leaf from June to October, in flower from June to September. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil. The plant can tolerates strong winds but not maritime exposure.

Distribution

S. America - Brazil.

Habitats

Cultivated Beds; South Wall. In. West Wall. In.

Edible Uses

Edible Parts: Flowers Leaves Root Edible Uses: Leaves - raw or cooked[K]. A pleasant acid flavour[K]. Use in moderation, see notes at top of sheet, Flowers - raw[K]. A pleasant and decorative addition to the salad bowl[K]. Most children really adore eating the flowers raw[K]. Root - raw or cooked. The root is up to 5cm long and 15mm wide, it is crisp and juicy with a pleasant sweet mild flavour[K].

Medicinal Uses

None known

Known Hazards

The leaves contain oxalic acid, which gives them their sharp flavour. Perfectly all right in small quantities, the leaves should not be eaten in large amounts since oxalic acid can bind up the body's supply of calcium leading to nutritional deficiency. The quantity of oxalic acid will be reduced if the leaves are cooked. People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition[238].