Alternatively, you can grow calla lilies in pots if you give them enough space. The general rule of thumb is to plant one calla lily bulb in a 20cm pot or three bulbs in a 40cm pot. John also adds ...

Calla lilies are susceptible to overwatering, but otherwise they're low-maintenance. Calla lilies need to be watered once a week on average. Soil should be kept evenly moist but not wet.