No, it is toxic to cats and dogs if chewed or swallowed.

How often should I water it?

Water when the top inch of soil feels dry to the touch.

Plant guide

Dumb Cane.

Dieffenbachia seguine

Pronounced dee-fen-BAK-ee-uh seh-GWIN-ee

Also known as Dumb-cane, Dumbcane, dumb cane, dumbplant, mother-in-law-plant, seguin tuftroot

Dumb cane is a popular tropical houseplant known for its striking, variegated foliage. It brings a lush, jungle feel to indoor spaces with its large, patterned leaves. It is a classic choice for adding height and texture to a room.

At a glance

Care level: Easy
Plant type: Tropical perennial
Light: Bright indirect light
Indoor light: medium
Water: Every 7 to 10 days
Mature size: 150 cm tall
Growth rate: medium
Hardiness: USDA 10 to 12
Bloom time: Rarely blooms indoors

Care

Keep your plant in bright, indirect light to maintain its beautiful variegation. Allow the top inch of soil to dry out before watering again to prevent root rot. Watch for drooping leaves, which often signal that the plant needs a drink or is sitting in a drafty spot.

Watering: Water when the top layer of soil feels dry to the touch.
Feeding: Use a balanced liquid fertilizer during the active growing season.
Pruning: Trim away yellowing or damaged leaves at the base to encourage new growth.
Repotting: Move to a slightly larger pot when the roots become crowded.
Soil: Well-draining peat-based potting mix
Soil pH: 5.6 to 6.5
Temperature: 15 to 27°C
Humidity: 40 to 60%
Drought tolerance: low
Lifespan: Perennial, typically 5 to 10 years indoors.
Deer and rabbits: high

Signs it needs repotting

Roots growing out of the drainage holes.
Water running straight through the pot without soaking in.
The plant becoming top heavy and tipping over easily.

Safety

People: All parts of the plant contain calcium oxalate crystals that cause intense burning, swelling, and irritation upon contact with skin or mucous membranes.
Pets: This plant is toxic to cats and dogs if ingested, as it contains calcium oxalate crystals that cause irritation.
Children: Keep this plant well out of reach of children, as the sap is extremely painful if touched or ingested.
Contact allergens: The sap is a potent skin irritant that can cause dermatitis in sensitive individuals.
Airborne allergens: There is no significant evidence that this plant acts as an airborne respiratory allergen.
Edibility: This plant is highly toxic if ingested and should never be consumed by humans or pets.

How to identify it

Large, oval-shaped, variegated leaves
Creamy white or yellow leaf patterns
Thick, succulent-like central stem
Leaves grow in an alternate arrangement

Height: 0.6 to 1.5m
Spread: 0.45 to 0.9m
Leaves: green, white, yellow, evergreen
Flowers: green, white, 5 to 10cm

Common problems

Spider mites — These tiny pests thrive in dry indoor air and cause stippling on the leaves.
Root rot — Overwatering leads to fungal decay of the root system.

Growing it

Propagation: cuttings, division
When to plant: spring, summer
Overwintering: Keep the plant in a warm spot away from cold drafts or heating vents during winter. Reduce watering slightly as growth slows down in cooler temperatures.
In containers: It grows very well in containers, provided the pot has drainage holes and is at least 8 to 10 inches wide.

Stem Cuttings

1. Cut a healthy stem section that includes at least one node.
2. Let the cut end callous over for a day.
3. Place the cutting in water or moist potting mix until roots develop.

Group plants with similar water needs together to maintain a consistent microclimate.

Grows well with

Peace Lily — They share similar requirements for humidity and indirect light.
Pothos — Both plants thrive in the same indoor environmental conditions.

Keep away from

Similar species

Aglaonema — They share a similar growth habit and foliage patterns.

Science

Family: Araceae
Genus: Dieffenbachia
Order: Alismatales
Class: Liliopsida
Native range: Tropical regions of the Americas and the Caribbean.
Conservation: This species is not currently listed as endangered or threatened in its native range.

It grows as an understory plant in tropical forests, where it relies on filtered light and high humidity.

Uses: indoor ornamental, foliage plant

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 6/9
Light: 3/9
Temperature: 8/9
Moisture: 6/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Is it safe for cats?: No, it is toxic to cats and dogs if chewed or swallowed.
How often should I water it?: Water when the top inch of soil feels dry to the touch.

Where the name comes from

The genus name honors the Austrian botanist Joseph Dieffenbach, while the species name seguine is derived from a local name used in the West Indies.

Good to know

It is a member of the Araceae family, which includes philodendrons and monsteras.
The leaves can grow quite large, often reaching over a foot in length.
It thrives in bright, indirect light but tolerates lower light levels well.

Is your dumb cane looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.