The illustrated growing guide

Dieffenbachia (Dumb Cane)

Dieffenbachia seguine

Family Araceae

Est. zones 10-12

Botanical illustration of Dieffenbachia (Dumb Cane) — Houseplant · Dieffenbachia seguine

Big splashy cream-and-green leaves and famously forgiving of low light — but the sap genuinely numbs the mouth and throat, so it's a poor pick for homes with pets or toddlers. Cut a bare, leggy plant to a stump and it comes back bushy.

Houseplant

Where to buy the plant — 2 nurseries

Dieffenbachia — a print from the Houseplants Vol. 2 collection

From the print shop

Growing dieffenbachia (dumb cane)? Hang it.

Our Houseplants Vol. 2 collection carries dieffenbachia (dumb cane) — Dieffenbachia seguine, print Nº 5, “Dieffenbachia.”

16 designsfrom $21.99white or black groundmatte poster, unframed

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Overview

Will dieffenbachia (dumb cane) suit your garden, and what goes wrong.

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Will it thrive where you are?

Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what dieffenbachia (dumb cane) actually needs.

Hardy inZones 10-12

Winter chillNone

Dieffenbachia (Dumb Cane) at a glance

HardinessUSDA 10–12

Mature size2-5 ft

PollinationN/A

Chill requirementNone (not chill-dependent)

Bloom seasonRare indoors

Harvest seasonNot yet established

Growth rateModerate

Common dieffenbachia (dumb cane) problems

Growing

Light, water, soil, propagation and the season’s jobs.

How to grow dieffenbachia (dumb cane): light, water & soil

LightMedium to bright indirect — direct sun scorches

WaterModerate — top inch dry between waterings

SoilPeaty, well-drained mix · pH 6.0 - 6.5

FertilizerMonthly dilute feed spring-summer

PruningAs needed — Cut leggy canes back hard — it re-sprouts from the stump, and the top roots in water.

SpacingOne per pot

How to plant & propagate dieffenbachia (dumb cane)

PropagateStem/leaf cuttings, division, or pups

When to spray dieffenbachia (dumb cane)

Growing season. Wipe leaves; airy mix.

Timing only — the label is the law

This is when to watch and when a treatment is worth considering, not a recommendation to apply any product. Read and follow the product label before you spray — under federal law the label is the legal instruction, and using a pesticide against it is illegal.

Check the pre-harvest interval. Every product that’s cleared for an edible crop sets a minimum number of days between spraying and picking. Find it on the label before you spray anything you intend to eat.
Check the re-entry interval before you or anyone else works in the treated area again, and use the protective equipment the label names.
Confirm the product is registered for dieffenbachia (dumb cane) in your state. A product legal on one crop is not legal on all of them, and state registrations differ — your state pesticide agency or local extension office can confirm both.
Rates and mixing instructions come from the label, never from us. We don’t publish them because they differ by product and formulation.

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The year

What dieffenbachia (dumb cane) asks for, month by month.

The dieffenbachia (dumb cane) year, month by month

No fixed season calendar for dieffenbachia (dumb cane) — its care follows conditions, not the calendar.

Ecology & uses

What it does for the garden, and what it is grown for.

Dieffenbachia (Dumb Cane) in the garden system

MoistureFacultative / average

DeerBrowsed — protect young plants

OriginIntroduced

What dieffenbachia (dumb cane) is grown for

! Some parts toxic — see notesTOXIC to cats/dogs and kids — sap numbs the mouth (the name 'dumb cane')

UseBold foliage

UseLow-light rooms

UseFloor plant

Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.

Cultivars

Named varieties of dieffenbachia (dumb cane), ruled as a catalogue.

Best dieffenbachia (dumb cane) varieties & cultivars

'Tropic Snow', 'Camille' (cream center), 'Tropic Marianne'

Sources & plant ID

Where the care distinctions come from, and how the plant is filed.

Research basis

Sources behind this profile

No extension citations are attached to dieffenbachia (dumb cane)yet. The care figures below come from the library's own catalogue rather than a traced primary source.

Plant ID

BinomialDieffenbachia seguine

FamilyAraceae

TypeHouseplant · Perennial

USDA symbolDISE7

OriginIntroduced

Invasive riskLow

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Where to buy

Third-party nurseries — not Story Thyme Farms.

Third-party nurseries, not Story Thyme Farms. Prices are theirs.

Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend. As an Amazon Associate I earn from qualifying purchases.

EtsyBrowse growers↗AmazonPlants & supplies↗

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Questions

Dieffenbachia (Dumb Cane) questions, answered straight.

Is dieffenbachia (dumb cane) safe for kids and pets?

With care. TOXIC to cats/dogs and kids — sap numbs the mouth (the name 'dumb cane') Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.

How do you propagate dieffenbachia (dumb cane)?

Stem/leaf cuttings, division, or pups.

Elsewhere

Where dieffenbachia (dumb cane) sits in the library.

Where dieffenbachia (dumb cane) sits in the library

Houseplants59 All collections

Grows in the same world

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