Dieffenbachia oerstedii

Dumb Cane

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Taxonomy

Common Names

Dumb CaneDieffenbachia

Context

nativeRegion

Central America (Costa Rica, Panama, Nicaragua)

usdaZones

10-12

companionPlants

Calathea, Philodendron, Aglaonema

culturalUses

Primarily ornamental; not known for traditional medicinal or culinary use due to toxicity.

Care

LightPrefers bright, indirect light but tolerates lower light; avoid direct sunlight.

WateringWater moderately, allowing the top inch of soil to dry before watering; do not let roots sit in water.

SoilWell-draining, peat-rich potting mix is ideal.

FertilizerFeed monthly with a balanced liquid fertilizer during the growing season (spring and summer).

HumidityPrefers high humidity; mist regularly or use a humidifier if air is dry.

TemperatureThrives between 18-27°C (65-80°F); avoid temperatures below 15°C (59°F).

HabitEvergreen perennial with upright, leafy stems.

Mature SizeTypically 0.6-1.2 m (2-4 ft) tall indoors.

Growth RateModerate growth rate.

BloomingRarely blooms indoors; produces small, creamy-white spathes.

DormancyNo true dormancy, but growth slows in winter.

MethodsStem cuttings, Air layering

DifficultyEasy to moderate

Best SeasonSpring or early summer

PruningRemove yellow or damaged leaves; pinch growing tips to encourage bushiness.

RepottingRepot every 1-2 years in spring or when rootbound.

Pests & DiseasesWatch for spider mites, aphids, mealybugs, and root rot when overwatered.

ToxicityToxic to pets and humans if ingested; causes oral irritation.

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