Cold hardiness & minimum temperature

Is Aglaonema Pictum Bicolor (Aglaonema pictum 'Bicolor')cold hardy? Hardiness zone & min temp

Also called Bicolor Aglaonema, Two-Tone Camouflage Plant.

More about aglaonema pictum bicolor

About Aglaonema Pictum Bicolor

Aglaonema pictum 'Bicolor' · also called Bicolor Aglaonema, Two-Tone Camouflage Plant · houseplant

Aglaonema pictum 'Bicolor' is a sought-after species form with velvety leaves patterned in two-tone camouflage shades of light and dark green. Native to Sumatran rainforests, it needs warmth and humidity to look its best and is fussier than common hybrids. Its painterly, matte foliage makes it a prized collector's Chinese evergreen.

Cold limit: USDA 11-12 (grown indoors in most US homes) · RHS H1b (20-29°C)

Watch for — Cold sensitivity: More tender than hybrid Aglaonemas; below 18°C the velvety leaves blacken. Keep warm and away from drafts year-round.

What aglaonema pictum bicolor's hardiness rating actually means

Aglaonema Pictum Bicolor is not cold hardy. It is a tropical houseplant that dies if it is left out through frost — there is no zone where it overwinters outdoors in a UK or cold-US climate. Its RHS rating of H1b means: Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season. On the US scale that maps to USDA 11-12 (grown indoors in most US homes) — the zones where it can be left outdoors year-round.

New to these scales? The USDA hardiness zone map explained covers how the zone numbers work, and you can find your own zone with the zone finder.

Minimum temperature — and what happens below it

Minimum survivable temperature is roughly about 10 °C (sustained cold below this is damaging). Aglaonema Pictum Bicolor has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for aglaonema pictum bicolor as it gets too cold:

Below about about 10 °C, growth stalls and the leaves start to show cold stress — dark, water-soaked, or yellowing patches.
A single light frost blackens the foliage; a hard freeze kills the whole plant, roots included, and it does not recover.
Even a cold, draughty windowsill or an unheated porch in winter can be enough to damage it permanently.

Can aglaonema pictum bicolor go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above 10 °C, in shade or dappled light, hardened off gradually.
Bring it back indoors well before the first autumn frost — do not wait for a frost warning, move it when nights drop toward 10-12 °C.
It will never overwinter outside in a temperate climate; the indoors is its winter home, full stop.

Work back from your local frost dates with the frost-date calculator: the last spring frost and first autumn frost are what really decide when aglaonema pictum bicolor can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Aglaonema Pictum Bicolor hardiness — frequently asked questions

Is aglaonema pictum bicolor cold hardy?

Aglaonema Pictum Bicolor is not cold hardy. It is a tropical houseplant that dies if it is left out through frost — there is no zone where it overwinters outdoors in a UK or cold-US climate. Indoor-only in almost every home. Aglaonema Pictum Bicolor can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12 (grown indoors in most US homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature aglaonema pictum bicolor can survive?

What hardiness zone is aglaonema pictum bicolor?

Aglaonema Pictum Bicolor is rated USDA 11-12 (grown indoors in most US homes) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can aglaonema pictum bicolor survive winter outside?

It can holiday outdoors in summer once nights are reliably above 10 °C, in shade or dappled light, hardened off gradually. Bring it back indoors well before the first autumn frost — do not wait for a frost warning, move it when nights drop toward 10-12 °C. It will never overwinter outside in a temperate climate; the indoors is its winter home, full stop.

What happens to aglaonema pictum bicolor below its minimum temperature?

Below about about 10 °C, growth stalls and the leaves start to show cold stress — dark, water-soaked, or yellowing patches. A single light frost blackens the foliage; a hard freeze kills the whole plant, roots included, and it does not recover. Even a cold, draughty windowsill or an unheated porch in winter can be enough to damage it permanently.