dumb-cane (Dieffenbachia seguine) — identification, habitat & look-alikes

Dumb-cane is an upright houseplant with a thick stem and broad leaves with cream-colored patches. Its sap can painfully irritate the mouth and skin.

Appearance

Appearance: Large leaves carry irregular white, cream, or yellow patches. Older plants show ring-shaped leaf scars on their thick stems.
Growth form: It grows upright rather than climbing as a vine; plants may reach 3–8 ft (0.9–2.4 m) in cultivation.
Fruit: Its green fruits turn red, but flowering and fruiting are uncommon indoors.

Look-alikes

Philippine evergreenAglaonema commutatum

Check the side veins on a clear leaf photo: dumb-cane usually has many more than eight, while Aglaonema typically shows five to eight prominent pairs.

Why they get mixed upBoth are upright houseplants with patterned leaves.

Peace lilySpathiphyllum wallisii

An older dumb-cane develops a visible cane with ringed leaf scars; peace lily leaves rise from a low clump.

Why they get mixed upBoth have broad leaves and arum-family flowers.

Where it lives

Typical habitats: Houseplants
Shaded tropical gardens
Range: Native to the Caribbean and tropical South America, it is grown as a houseplant in much of the United States.
Preferred conditions: It does best with warm temperatures and indirect light.

Growing it

Care: In Florida, this species has a high risk of becoming , so outdoor planting is not recommended there.
Toxicity: Chewing any part can cause burning and swelling of the mouth and throat. The sap can also irritate skin and eyes, and the plant is toxic to pets.

Name and classification

Varieties and forms: such as 'Camille' have different leaf patterns.

Conservation

IUCN Red List: NENot EvaluatedNot yet assessed

Culture and stories

Culture and stories: The name dumb-cane refers to the mouth and throat swelling its sap can cause.
The Dieffenbachia group was named for J. F. Dieffenbach, a gardener in Vienna.

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