How to Grow Miniature Calla Lilies

Till the soil to a depth of 8 to 12 inches in an area that receives six to eight hours of direct sunlight a day. Remove rocks and roots and rake the area smooth. Spread a 2- to 3-inch layer of compost or well rotted manure over the area and work it into the top 6 inches of soil.

Plant calla lilies in the spring after the danger of frost has passed in your area. Place the calla lily rhizomes at a depth of 1 inch, spaced 8 to 12 inches apart. Group calla lilies in clusters of three or five to create a natural look to the planting.

Cover the rhizomes with soil and firm down with your hands to remove air pockets.

Water thoroughly to moisten the soil to the root level. Keep the soil moist until new growth appears. Reduce water to once or twice a week, or whenever the soil feels dry to the touch. Watering needs vary according to the weather and the growth rate of your plants.

Apply water-soluble fertilizer designed for flowering plants after planting in the spring. This typically provides the nutrients calla lilies require for healthy growth.

Mulch around the base of calla lilies with organic mulch, such as wood chips or bark, to conserve moisture and reduce weeds.

Dig miniature calla lily rhizomes in the fall when foliage dies back from the frost. Place the rhizomes in a box filled with peat moss and store in a cool dry place, such as a basement, for the winter. Replant in the spring.