Dieffenbachia seguine

Dumb cane

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Taxonomy

Common Names

Dumb caneLeopard lily

Context

nativeRegion

Tropical Central and South America.

usdaZones

10–12 (grown as a houseplant in cooler areas).

companionPlants

Aglaonema, Philodendron, Pothos

culturalUses

Primarily ornamental; valued for its striking variegated foliage.

Care

LightBright, indirect light; can tolerate lower light but will grow more slowly.

WateringKeep soil consistently moist but not soggy; let the top inch of soil dry out between waterings.

SoilWell-draining, rich potting mix with organic matter.

FertilizerFeed monthly during spring and summer with a balanced liquid fertilizer diluted to half strength.

HumidityPrefers high humidity, but can adapt to average indoor levels.

TemperatureThrives between 18–24°C (65–75°F); avoid temperatures below 15°C (60°F).

HabitUpright, bushy herbaceous perennial with thick stems.

Mature SizeUp to 1.5–2 m (5–6 ft) tall indoors.

Growth RateModerate.

BloomingOccasional, with inconspicuous greenish-white spathes (rare indoors).

DormancyNo pronounced dormancy, but growth slows in winter.

MethodsStem cuttings, Air layering

DifficultyEasy to moderate.

Best SeasonSpring to early summer.

PruningPrune to remove damaged leaves and encourage bushiness.

RepottingRepot every 2–3 years or when rootbound.

Pests & DiseasesSusceptible to spider mites, aphids, mealybugs, and root rot if overwatered.

ToxicityHighly toxic to humans and pets if ingested.

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