Cold hardiness & minimum temperature

Is Aglaonema 'Lady Valentine' (Aglaonema 'Lady Valentine')cold hardy? Hardiness zone & min temp

Also called Lady Valentine Chinese Evergreen.

More about aglaonema 'lady valentine'

About Aglaonema 'Lady Valentine'

Aglaonema 'Lady Valentine' · also called Lady Valentine Chinese Evergreen · houseplant

Aglaonema 'Lady Valentine' is a showy pink Chinese Evergreen with leaves heavily suffused in candy-pink and speckled green margins. The high pink content means it needs good indirect light to stay vivid and grows a little slower than green types. Warm, humid, draught-free conditions keep this eye-catching aroid colourful and healthy indoors.

Cold limit: USDA 10-12 (indoor in most US homes) · RHS H1b (18-27°C)

Watch for — Cold-damage blotches: Below 15°C dark greasy spots appear and leaves drop; keep warm and away from cold windows.

What aglaonema 'lady valentine''s hardiness rating actually means

Aglaonema 'Lady Valentine' 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 10-12 (indoor 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 'Lady Valentine' has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for aglaonema 'lady valentine' 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 'lady valentine' 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 'lady valentine' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Aglaonema 'Lady Valentine' hardiness — frequently asked questions

Is aglaonema 'lady valentine' cold hardy?

Aglaonema 'Lady Valentine' 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 'Lady Valentine' can only live outside year-round in genuinely frost-free climates (roughly USDA 10-12 (indoor in most US homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature aglaonema 'lady valentine' can survive?

What hardiness zone is aglaonema 'lady valentine'?

Aglaonema 'Lady Valentine' is rated USDA 10-12 (indoor 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 'lady valentine' 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 'lady valentine' 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.