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Chinese evergreen

Aglaonema modestum, Araceae

Sources last read 14 September 2026.

Not yet rated How forgiving it is has not been judged here yet.

Also called green-for-ten-thousand-years and lily of China.

Chinese evergreen (Aglaonema modestum), the whole plant.
Mangostar, CC BY-SA 3.0 · Wikimedia Commons

Chinese evergreen is toxic

  • Toxic to cats. Toxic principle: Insoluble calcium oxalates. Clinical signs: Oral irritation, pain and swelling of mouth, tongue and lips, excessive drooling, vomiting (not horses), difficulty swallowing. ASPCA
  • Toxic to dogs. Toxic principle: Insoluble calcium oxalates. Clinical signs: Oral irritation, pain and swelling of mouth, tongue and lips, excessive drooling, vomiting (not horses), difficulty swallowing. ASPCA
  • Toxic to people. Listed as harmful to people; the details of the harm could not be read from the source. RHS

What the sources say about its care

Light
Low light 100 fc
Clemson Extension · read 13 September 2026
Partial shade
RHS · read 13 September 2026
Water
Moist but well-drained
RHS · read 13 September 2026
Humidity

No source read publishes a humidity figure for any plant on this site. What follows is general guidance for foliage plants.

ASHRAE recommends indoor relative humidity between 30% and 60% 30–60%
Penn State Extension · read 13 September 2026
Temperature

How cold this tolerates, not what it prefers. No source read for this site publishes a preferred range for a plant indoors.

H1B — 10–15°C 10–15 °C
RHS · read 13 September 2026
Soil
Loam, Sand; pH Acid or Alkaline or Neutral
RHS · read 13 September 2026
Toxic to cats
Toxic
ASPCA · read 13 September 2026
Toxic to dogs
Toxic
ASPCA · read 13 September 2026
Harmful to people
Listed as harmful to people; the details of the harm could not be read from the source.
RHS · read 13 September 2026

Routine care

Watering
Water moderately; in winter let it dry out a little between waterings.
RHS · read 13 September 2026
Feeding
Through the growing season, mist every day and give a balanced liquid fertiliser each month.
RHS · read 13 September 2026
Repotting
Move to a larger pot every 2-3 years.
RHS · read 13 September 2026
Propagation
Detach basal shoots bearing 3 or 4 leaves, preferably with roots, or divide in spring.
RHS · read 13 September 2026
Pruning
Pruning is not needed.
RHS · read 13 September 2026
Pests and diseases
Mealybugs can occur. Diseases: stem and root rots when the compost is very wet.
RHS · read 13 September 2026

Move something and watch

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About the plant

Aglaonema modestum, called Chinese evergreen, green-for-ten-thousand-years, and lily of China, is a species of flowering plant in the genus Aglaonema, native to Bangladesh, Thailand, Laos, Vietnam, and southeast and south-central China. In these areas, it is found in tropical swamps and rainforests.

From Wikipedia, CC BY-SA 4.0 · read 13 September 2026

Native range
SE. Bangladesh to S. China and Indo-China
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP · read 13 September 2026
S China, N Laos, N Thailand
RHS · read 13 September 2026
Climate
wet tropical
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP · read 13 September 2026
Growth form
subshrub
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP · read 13 September 2026
Clump forming (evergreen)
RHS · read 13 September 2026
Size
Height 0.5-1 metres; spread 0.1-0.5 metres after 2–5 years
RHS · read 13 September 2026
Flowering
Flowers green in summer
RHS · read 13 September 2026

More of the Araceae family

Plants with similar care

Sources

What this does not cover

The figures above are what published sources say, not measurements of the plant in your room. They say nothing about your pot size, your water, the season, or how far from the glass the plant stands, and those decide more than any figure here does.

Humidity has no species figure because no source read for this site publishes one, and the only temperature published for this plant is a cold floor. The simulator fills those gaps with general figures for its kind of plant, marked as general and listed on how we read sources. Where a toxicity row says the plant was not assessed, that is the absence of a finding and not a finding of safety.

If something is already wrong, the diagnosis tool asks about the soil, the window and the watering, which is where the answer usually is.