Care checklist:
- Place oxalis in a bright, sunny window, and keep soil moist but not waterlogged.
- Specimens may go dormant for several weeks in the depths of winter; suspend watering until light levels increase.
- While plants are in active growth, feed with a liquid fertilizer for flowering plants (such as 15-30-15) at half strength.
- Remove spent stalks and leaves with a gentle tug. Note: Oxalis does not require deadheading.
info via Canadian Gardening