Zantedeschia albomaculata (spotted-leaf calla lily) care

Light

Zantedeschia albomaculata is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Prefers bright conditions: full sun to part shade outdoors or a bright indoor position. Good light promotes flowering and keeps the spotted foliage compact; deep shade leads to lax growth and few flowers. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water zantedeschia albomaculata when the top 2-3 cm of soil is dry, roughly every 5-7 days in active growth. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Keep compost evenly moist through the spring-to-summer growing season, never waterlogged. As the leaves yellow in late summer, taper off watering and keep the dormant tuber dry until growth resumes.

Soil and pot

Zantedeschia albomaculata grows best in fertile, free-draining loam-based or multipurpose mix. A rich but sharply drained mix, slightly acidic to neutral. This summer-rainfall species needs free drainage and a dry rest; it is more drought- and drainage-tolerant than the bog-loving white arum lily. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Zantedeschia albomaculata sits happiest at around 40-60% humidity and 15-25°C (59-77°F). Average humidity is suitable. It copes with the drier air of a sunny windowsill or open garden during growth and resents cold, stagnant, humid conditions while dormant. If you keep the room above 15 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed zantedeschia albomaculata sparingly. Feed every 2-3 weeks during active growth with a balanced-to-high-potassium liquid feed for steady flowering. Reduce nitrogen as flowering approaches and stop feeding once the foliage dies down for dormancy. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on zantedeschia albomaculata in the Growli community. Each is annotated with the most common cause so you know where to start.

• Tuber rot — Cold, wet soil during dormancy is the main hazard; keep the dormant tuber dry and grow in free-draining mix during the season.
• Poor flowering — Too little light or an immature/crowded tuber reduces blooms; provide brighter light and divide congested clumps.
• Late-summer yellowing — Natural dormancy onset; reduce watering and allow the foliage to die back rather than treating it as disease.
• Aphids and spider mites — Sap-sucking pests attack soft growth in warm, dry conditions; inspect regularly and treat early with insecticidal soap.

Propagation

Propagate by dividing tubers and offsets during dormancy, each with a growing point, or from seed (which is variable in this species). Pot in free-draining mix and resume watering as new shoots appear. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Zantedeschia albomaculata is toxic to pets. Toxic to cats and dogs. The ASPCA classifies calla lily (Zantedeschia) as toxic because of insoluble calcium oxalate crystals in all parts; chewing causes oral irritation, intense burning of the mouth, tongue and lips, drooling, vomiting and difficulty swallowing. Keep away from pets. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Zantedeschia albomaculata deep-dive guides

Every aspect of zantedeschia albomaculata care, each with its own calibrated guide:

• Zantedeschia albomaculata watering schedule
• Zantedeschia albomaculata light requirements
• Best soil mix for zantedeschia albomaculata
• Zantedeschia albomaculata fertilizing guide
• When to repot zantedeschia albomaculata
• How to propagate zantedeschia albomaculata
• Zantedeschia albomaculata growth rate & size
• Zantedeschia albomaculata cold hardiness
• Zantedeschia albomaculata temperature & humidity
• Is zantedeschia albomaculata toxic to cats & dogs?
• Is zantedeschia albomaculata toxic to cats?
• Is zantedeschia albomaculata toxic to dogs?
• Getting zantedeschia albomaculata to bloom

Featured in these plant shortlists

Zantedeschia albomaculata qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Zantedeschia albomaculata is also commonly called spotted-leaf calla lily or white spot calla.

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• All 5561 plant care guides in the Growli library