Answer: Calla lilies grow from rhizomes that should be planted 4-6 inches deep and 1-2 feet apart. They will grow in sun to partial shade in rich, moist soil. For a bed the size of yours, a maximum of 10 Calla clumps should be used. To compliment the Callas consider plants with variegated leves to contrast with the dark green foliage of the Callas. Caladium or Lamium or Coleus would be good companions. Or you might try brightly flowering annuals or perennials like impatiens or fuchsias.
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