Growing Calla Lily Bulbs in a Vase

Fill the vase halfway with organic potting soil or soilless potting media.

Place one calla lily bulb into a 1-gallon vase. Press the bulb into the potting media, then add more media to cover.

Water the bulb to saturate the soil mix.

Leave the bulb in a cool location so the roots can begin to grow. At this point, it doesn't matter how much light the bulb gets. Typically, roots develop within two weeks. Keep the potting media moist during this time.

Transfer the calla lily to a sunny and warm location after two weeks. Every few days, rotate the vase to expose different sides of the growing plant to sun and promote straight stalks.

Water the calla lily when the media becomes dry to the touch, adding enough water to saturate the soil. Let the soil dry out between watering times.

Fertilize your calla lily with a water-soluble houseplant fertilizer, applying the amount recommended for your size plant. Reapply the fertilizer as often as suggested on the product.

Continue to water, fertilize and rotate calla lilies from the time the blooms open, four to eight weeks after forcing the bulb, through the duration of the flowering period.

Discontinue watering in the autumn to prepare the plant for a dormant period. The foliage will turn yellow.

Cut back all foliage, taking care not to cut into the bulb. Transfer the vase to a cool location, such as a basement. Allow the calla lily bulb to rest for six to eight weeks, then reintroduce the plant to light, and resume the cycle.