Give bright, indirect light, such as from a south- or west-facing window. Under low-light conditions, plants may become spindly and fail to bloom.

Ideal room temperature:

Cool night temperatures (around 50° to 65°F) and warm daytime temperatures (around 70° to 75°F).

Humidity:

Average household humidity levels are fine.

Watering:

Keep soil evenly moist, watering when the surface of the soil feels dry. Pots should have drainage holes to prevent soggy soil.

Fertilizing:

Feed every 2 to 3 weeks with a balanced liquid house plant fertilizer while plants are actively growing.

Dormancy:

If your indoor oxalis begins to lose all of its leaves, don’t panic. It’s just entering a period of dormancy (which usually lasts for a month or two) so it can conserve energy for a new flush of growth. During this time, move your plant into a dark place, reduce watering, and stop fertilizing until you see new growth begin. This dormancy period is a good opportunity to divide plants by separating some of the bulbs and replanting them in new pots.