Cold hardiness & minimum temperature

Is Monstera Adansonii Wide Form (Monstera adansonii var. laniata)cold hardy? Hardiness zone & min temp

Also called Wide form adansonii, Large form Swiss cheese vine.

More about monstera adansonii wide form

About Monstera Adansonii Wide Form

Monstera adansonii var. laniata · also called Wide form adansonii, Large form Swiss cheese vine · houseplant

The wide form of Monstera adansonii (var. laniata) has broader, glossier leaves than the common narrow form, with large oval fenestrations and a more pronounced sheen. This climbing Swiss cheese vine grows quickly on a moss pole in bright indirect light and warm, humid conditions. Like all Monstera, it is toxic to pets.

Cold limit: USDA 10-12 (indoor in most US homes) · RHS H1b (18-29°C)

What monstera adansonii wide form's hardiness rating actually means

Monstera Adansonii Wide Form 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). Monstera Adansonii Wide Form has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for monstera adansonii wide form 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 monstera adansonii wide form 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 monstera adansonii wide form can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Monstera Adansonii Wide Form hardiness — frequently asked questions

Is monstera adansonii wide form cold hardy?

Monstera Adansonii Wide Form 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. Monstera Adansonii Wide Form 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 monstera adansonii wide form can survive?

What hardiness zone is monstera adansonii wide form?

Monstera Adansonii Wide Form 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 monstera adansonii wide form 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 monstera adansonii wide form 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.