How to Divide a Potted Calla Lily With Multiple Bulbs

Water your calla lily as normal after blooming in late spring, but watch for the blooms and leaves to begin to turn yellow. Back off watering to once a week with only enough water to dampen the soil. Leave the plant alone as the leaves turn brown and dry up. Let the soil go dry between very light waterings for one to two months.

Spread newspaper over a surface. Lift the calla lily from the pot and set the cluster of rhizomes onto the newspaper. Dust off excess soil and inspect the bulbs for areas where you can cut away single portions or where you could cut to form a group of two to three bulbs.

Cut through the rhizome with a knife or break the bulbs apart with your hands until each cluster has no more than three bulbs attached together.

Replace the soil in the original pot and fill any additional pots now needed for the lilies with fresh potting soil which contains fertilizer. Plant the single bulbs or bulb sets 2 inches deep spaced at least 6 inches apart into the pots.

Water the pots well to moisten and settle the soil. Continue providing small amounts of water weekly just enough to dampen the soil until new growth appears, within one to two months. Once fresh leaves emerge from the soil and you know the roots are actively drinking, resume normal watering.