Also known as a 'false shamrock', there are many species of oxalis, but this purple beauty - oxalis triangularis is the most popular.

It will thrive in bright indirect to bright direct light. It is not really suited for low light conditions. Water when the top 2-3 cm of soil is bone dry.

It's common for oxalis to go through a dormant phase in the winter. A significant portion of the plant may die back and go into dormancy if it's not getting enough light and heat. Give a dose of fertilizer and more light and it’ll kickstart the growth again.