What is a Calla Lily Flower

A calla lily (Zantedeschia spp., primarily Z. aethiopica) is a rhizomatous herbaceous perennial in the Araceae (arum) family, native to southern Africa and not a true lily despite its common name. These elegant plants grow 30–90 cm tall in clumps, featuring arrow-shaped, glossy green leaves (often spotted) and solitary, funnel-shaped spathes surrounding a yellow spadix of tiny flowers, in colors from white to pink, yellow, orange, and purple.​

Botanical Characteristics

Calla lilies emerge from fleshy rhizomes, producing long-petioled, sagittate leaves 15–45 cm long with parallel veins and sometimes translucent spots. The “flower” is a showy, leaf-like spathe (bract) 8–25 cm long curving around a central spadix packed with minute florets; male flowers sit above female ones to prevent self-pollination.​

• Floral traits: Spathe colors vary by species (Z. aethiopica white, Z. rehmannii pink/red); blooms late spring to fall; fruits are berry-like clusters.​
• Growth habit: Clump-forming, evergreen in mild climates; dormant in winter; toxic sap irritates skin.​

Taxonomy and Classification

The genus Zantedeschia comprises 8 species, divided into Zantedeschia section (e.g., white Z. aethiopica) and Hastata section (colored hybrids like Z. elliottiana yellow); not related to Lilium. Hybrids blend traits for floristry.​

Cultivation Practices

Callas prefer full sun to partial shade, moist, rich, well-drained soil (pH 6–7), zones 8–10 (lift rhizomes in colder areas); plant 10 cm deep in spring. Water consistently; divide every 3–4 years.​

• Maintenance: Mulch for moisture; tolerant of wet soils, deer/rabbit resistant.​
• Challenges: Soft rot, aphids—ensure drainage.​

Floristry and Economic Uses

Iconic cut flowers (vase life 10–14 days, store cool); bridal favorite for sleek form.​

Cultural and Symbolic Significance

Symbolize purity (white), passion (red); named for spathe resemblance to pig lily.