Dieffenbachia maculata
Dieffenbachia maculata
Dumb cane
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Taxonomy
Family Araceae · Genus Dieffenbachia
Common Names
Dumb caneSpotted dumb cane
Context
nativeRegion
Tropical Central and South America
usdaZones
10–12 (typically grown as a houseplant elsewhere)
companionPlants
Philodendron, Aglaonema, Calathea
culturalUses
Widely grown as an ornamental foliage plant in homes and offices.
Care
Care Requirements
LightBright, indirect light; tolerant of lower light but avoids direct sun.
WateringKeep soil consistently moist but not soggy; allow top inch to dry between waterings.
SoilWell-draining, peat-rich potting mix.
FertilizerFeed monthly with balanced, water-soluble fertilizer during spring and summer.
HumidityPrefers higher humidity; mist regularly or use a humidity tray.
Temperature18–27°C (65–80°F); avoid cold drafts and temperatures below 15°C (60°F).
Growth & Life Cycle
HabitUpright, bushy perennial with large, patterned leaves.
Mature Size60–120 cm (2–4 ft) tall indoors.
Growth RateModerate to fast growing with proper care.
BloomingRarely flowers indoors; spathes typical of Araceae but mostly grown for foliage.
DormancyNo true dormancy; growth slows in winter.
Propagation
MethodsStem cuttings, Air layering, Division
DifficultyEasy
Best SeasonSpring or early summer
Maintenance & Notes
PruningRemove yellow or damaged leaves; trim leggy stems to encourage bushiness.
RepottingRepot every 1–2 years or when root-bound.
Pests & DiseasesWatch for spider mites, aphids, and mealybugs. May suffer root rot if overwatered.
ToxicityToxic to humans and pets if ingested; causes mouth irritation and swelling.
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