0How it thrives
Watermedium
Lightbright indirect
Humiditymedium
Min. temperature15 °CJanuary
When the top 2–3 cm of soil are dry – less often in winter, with room-temperature water.
No feeding now.
Warm room (above 15 °C), at the brightest window, away from radiators and draughts.
Spider mites love dry heated air – check the undersides of the leaves.
February
When the top 2–3 cm of soil are dry – less often in winter, with room-temperature water.
No feeding now.
Warm room (above 15 °C), at the brightest window, away from radiators and draughts.
Spider mites love dry heated air – check the undersides of the leaves.
March
When the top 2–3 cm of soil are dry.
First weak dose at the end of the month if it is actively growing.
Bright spot, east or west window.
If roots fill the pot: fresh soil, a pot 1–2 cm larger. Water sparingly for a week afterwards.
April
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright spot, east or west window.
If roots fill the pot: fresh soil, a pot 1–2 cm larger. Water sparingly for a week afterwards.
May
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright spot, east or west window.
June
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Bright window indoors, midday sun filtered by a curtain; away from draughts and air-con.
July
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Bright window indoors, midday sun filtered by a curtain; away from draughts and air-con.
August
When the top 2–3 cm of soil are dry – more often in heatwaves, preferably in the evening.
Liquid feed every 2–3 weeks.
Bright window indoors, midday sun filtered by a curtain; away from draughts and air-con.
September
When the top 2–3 cm of soil are dry.
Liquid feed every 2–3 weeks.
Bright spot, east or west window.
October
When the top 2–3 cm of soil are dry.
No feeding now.
Bright spot, east or west window.
Keep it away from radiators; watch for spider mites in the dry air.
November · now
When the top 2–3 cm of soil are dry.
No feeding now.
Bright spot, east or west window.
December
When the top 2–3 cm of soil are dry – less often in winter, with room-temperature water.
No feeding now.
Warm room (above 15 °C), at the brightest window, away from radiators and draughts.
Spider mites love dry heated air – check the undersides of the leaves.
Its sap causes painful swelling in the mouth – keep away from children and pets.
Dumb cane – what to know
Dumb cane (Dieffenbachia seguine) belongs to the Araceae family (genus Dieffenbachia) and is listed in our catalog under “Houseplant”. Its needs – light: bright indirect; water: medium; humidity: medium. Keep it above 15 °C – it is frost-tender and needs a frost-free spot in winter. Easy enough for beginners. For cats: moderately toxic; for dogs: moderately toxic. Keep it out of reach and call a vet straight away if you suspect poisoning. Nobody on Perfect Plants Club has added it to their collection yet – be the first!
All Dieffenbachia species in the catalog →Detailed toxicity data →
Frequently asked questions
How often should I water Dumb cane?
Moderately: water when the top 2–3 cm of soil is dry, and never let it sit in standing water.
How much light does Dumb cane need?
It likes bright but indirect light, such as near an east- or west-facing window.
How cold can Dumb cane get?
Keep it above 15 °C – it is frost-tender and needs a frost-free spot in winter.
Is Dumb cane toxic to cats and dogs?
For cats: moderately toxic; for dogs: moderately toxic. Keep it out of reach and call a vet straight away if you suspect poisoning.
What members’ data shows
When does it really bloom?
No blooms logged yet. If yours flowers, your data will be the first!
Average watering interval
Not enough watering logs yet. Waterings logged in the care hub feed this chart.
Tips and questions about this species
Dieffenbachia
Care data is for guidance only.
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