Zantedeschia aethiopica

Calla Lily Care & Identification Guide

Exuding a sculptured, minimalist elegance, the Calla Lily features sleek, trumpet-shaped spathes wrapped around a golden-yellow central spadix. Originating from damp, marshy areas of South Africa, these exotic plants grow from underground rhizomes, requiring moist soil to sustain their glossy, spear-shaped leaves. It is widely celebrated by botanists for its distinct environmental adaptability and structural appeal.

Sunlight Full Sun

Watering Moderate to

Soil Mix Rich, organic-heavy

Temperature 16°C - 24°C

Toxicity Highly Toxic

Botanical macro photography of Calla Lily (Zantedeschia aethiopica) - Plant AI care database

How to Identify Calla Lily

An elegant, architectural perennial with smooth, spear-shaped foliage and striking trumpet-like flower spathes enclosing a yellow spike.

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Key Visual Features: Large, arrow-shaped green leaves (often speckled with white dots), long smooth leaf stalks, and a funnel-shaped waxy bract.
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Color Variations: Classic pure waxy white, bright yellow, rich orange, hot pink, deep red, and dark plum-black.
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Common Confusions: Can resemble Peace Lilies (Spathiphyllum) due to the spathe-and-spadix structure, but recognized by its arrow-shaped leaves and much thicker, waxy, funnel-shaped flower blooms.

💡 Plant AI Tip: If you are not sure, take a photo with Plant AI to identify it instantly.

Complete Care & Cultivation Guide

Follow our detailed scientific care guide to keep your Calla Lily thriving and gorgeous all year round.

Calla Lily requires a highly measured water supply. Typically, water thoroughly until it drains out of the bottom holes only when the top soil layer becomes dry. Based on its specific characteristics: Moderate to High (Keep soil consistently moist during the active growing and blooming season). Never allow the roots to sit in stagnant water as it leads to root decay. Reduce watering significantly during autumn and winter dormant phases.

Regular deadheading is essential for Calla Lily. Snip off faded, spent flowers immediately to prevent seed production and redirect the plant's energy into producing fresh new buds. Trim yellowing or damaged foliage near the stem base using sterilized bypass shears.

Feed Calla Lily heavily in spring and summer with a fertilizer high in phosphorus to support prolific bud development and rich petal color. Apply a diluted balanced flower liquid fertilizer every 2 to 3 weeks. Avoid excess nitrogen which results in massive green leaves but sparse blooms.

Calla Lily requires Bright, Indirect Light to Full Sun (Appreciates light afternoon shade in hot climates). Provide bright, consistent indirect filtered sunlight daily. Avoid exposing the foliage to harsh direct midday sun which can easily bleach, scorch, or dry out the delicate leaves.

The optimal substrate for Calla Lily is a loose, rich, exceptionally fast-draining potting soil. Based on requirements: Rich, organic-heavy, moisture-retentive, well-draining loamy soil (pH 5.6-6.5). A standard high-aeration mix consists of 50% organic peat moss or coco coir, 30% chunky orchid bark or pumice, and 20% coarse perlite to facilitate excellent oxygen circulation.

Easily propagate Calla Lily using stem cuttings in spring. Cut a healthy 4-inch stem section just below a node, remove lower leaves, and submerge the node in clean water or moist perlite mix until active roots develop in 3 weeks.

Thrives in standard warm environmental conditions: 16°C - 24°C (60°F - 75°F); highly sensitive to frost, tubers must be stored in winter. Keep the plant safe from cold drafts, drafty windows, air conditioning vents, or direct heaters. Ensure winter protection is maintained to prevent cellular damage and floppy leaf decay.

Choose a heavy unglazed clay or terracotta container with multiple bottom drainage holes. Terracotta allows excess soil moisture to breathe and evaporate safely. Repot the plant every 1 to 2 years in spring, upgrading to a container that is 2 inches wider.

Regularly inspect Calla Lily leaves for spider mites spinning fine webs under dusty leaves, cottony mealybugs hiding in leaf joints, or scale insects on stems. Treat immediately by wiping foliage with organic neem oil solution or spraying with mild insecticidal soap every 7 days.

Calla Lily can be affected by: • **Bacterial Soft Rot (Erwinia)**: Symptoms include Stems turn watery, mushy, black near the soil line, emitting a foul odor; leaves collapse and turn yellow.. *Action*: Discard infected plants and soil immediately. Avoid overwatering, keep potting mix light and airy, and ensure rhizomes are planted in clean containers. | • **Foliar Gray Mold (Botrytis)**: Symptoms include Flower spathes and leaves develop water-soaked spots covered in fuzzy gray fungal spores during cold, damp weather.. *Action*: Prune affected flowers. Improve air movement, reduce room humidity, and water only from the base, keeping the trumpet blooms dry.. Always prioritize soil drainage and proper air circulation. Spray leaves with organic fungicides like copper fungicide or chamomile tea sprays to prevent bacterial leaf spot spreads.

The secret to a gorgeous Calla Lily is consistent placement and cleaning. Avoid rotating or moving the plant frequently as sudden environmental shifts can induce shock. Wipe leaves with a damp microfiber cloth monthly to clear dust and enhance natural photosynthesis.

Common Diseases & Treatment

Bacterial Soft Rot (Erwinia)

Symptoms: Stems turn watery, mushy, black near the soil line, emitting a foul odor; leaves collapse and turn yellow.

Action: Discard infected plants and soil immediately. Avoid overwatering, keep potting mix light and airy, and ensure rhizomes are planted in clean containers.

Foliar Gray Mold (Botrytis)

Symptoms: Flower spathes and leaves develop water-soaked spots covered in fuzzy gray fungal spores during cold, damp weather.

Action: Prune affected flowers. Improve air movement, reduce room humidity, and water only from the base, keeping the trumpet blooms dry.

Frequently Asked Questions

Is a Calla Lily a true lily?

No! Despite its common name, the Calla Lily is not a member of the Liliaceae (true lily) family. It belongs to the Araceae (Arum) family, making it a close relative of Philodendrons, Monstera, and Peace Lilies.

How do I overwinter Calla Lily tubers in cold climates?

In zones with freezing winters, dig up the tubers in autumn after the foliage turns yellow. Cut off the dry leaves, let the tubers dry in a warm room for a week, then pack them in dry peat moss or sawdust and store at 10°C (50°F) until spring.

Why are my Calla Lily leaves dripping water from the tips?

This is a natural physiological phenomenon called guttation. When the soil is highly moist, root pressure forces excess water out of specialized pores at the leaf tips. It is harmless, but indicates soil moisture is very high.

Why are the white flowers turning green?

As the Calla Lily bloom ends its life cycle, the waxy spathe naturally turns green to perform photosynthesis and channel energy back into the underground tuber for next year's growth. Cut spent blooms off at the base.