Oxalis triangularis is part of the Oxalidaceae family and is native to Argentina, Bolivia & Paraguay. The tri-foliate leaves resemble purple butterflies as they fold downwards at night due to changes in cell turgor pressure, this response is known as photonasty. Oxalis will flower in spring, blooms are trumpet shaped and white or pale pink. This plant will have a period of dormancy, during this time, reduce watering and wait for new growth.


This plant is toxic, keep out of reach of pets and children.


Pot Size: 12cm diameter

Height: Approximately 20cm in height.

Featured in St Tropez pot 14cm diameter, pot nnot included.




How do you look after an oxalis triangularis?


Look after oxalis triangularis by keeping it in a shaded spot away from direct sunlight, sat back from a window in a bright room. If the room is more north-facing, place it closer to a window. This plant grows best in temperatures between 15-21°C with average room humidity. This plant should be kept in a room no cooler than 13°C during the night.


Can oxalis triangularis be planted outside?


Oxalis can be planted outside however greater attention will need to be paid to it, in order to ensure that it remains in optimal growing conditions. Oxalis should be planted in well-drained soil that remains consistently moist, but not soggy. If you cannot guarantee that these conditions can be met, then it’s recommended to grow your plant inside where you have greater control over its environment, 


How often do you water oxalis triangularis?


Water oxalis triangularis when the top inch of soil feels dry to the touch during the summer. During the winter, water every two to three weeks at most. It’s important that the soil does not become soggy, as this could lead to the roots rotting and the plant dying. 


Why do oxalis triangularis leaves close at night?


Oxalis triangularis leaves naturally close at night. This process is called nyctinasty and many other plants do it as well. It’s thought that plants have adapted to do this in order to avoid being eaten by herbivores, or simply keep warm during cold nights.

Oxalis triangularis subsp. papilionacea