Cold hardiness & minimum temperature

Is Baltic Blue Pothos (Epipremnum pinnatum 'Baltic Blue')cold hardy? Hardiness zone & min temp

Also called Baltic Blue Pothos, Baltic Blue, Blue Pothos.

More about baltic blue pothos

About Baltic Blue Pothos

Epipremnum pinnatum 'Baltic Blue' · also called Baltic Blue Pothos, Baltic Blue · houseplant

Baltic Blue is a fast-growing Epipremnum pinnatum cultivar prized for blue-green leaves that fenestrate (split) early when climbing. It thrives in bright indirect light, wants its top inch or two of soil to dry between waterings, and tolerates average home humidity. As an aroid it is toxic to cats and dogs.

Cold limit: USDA 10-12 (grown as a houseplant elsewhere) (18-26 C)

What baltic blue pothos's hardiness rating actually means

Baltic Blue Pothos 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 H1c means: Warm-temperate — can summer outdoors but must come in well before the first frost. On the US scale that maps to USDA 10-12 (grown as a houseplant elsewhere) — 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 5 °C (and never frost). Baltic Blue Pothos has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for baltic blue pothos as it gets too cold:

Below about about 5 °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 baltic blue pothos go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above 5 °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 baltic blue pothos can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1c figure above.

Baltic Blue Pothos hardiness — frequently asked questions

Is baltic blue pothos cold hardy?

Baltic Blue Pothos 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. Baltic Blue Pothos can only live outside year-round in genuinely frost-free climates (roughly USDA 10-12 (grown as a houseplant elsewhere)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature baltic blue pothos can survive?

Minimum survivable temperature is roughly about 5 °C (and never frost). Baltic Blue Pothos has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is baltic blue pothos?

Baltic Blue Pothos is rated USDA 10-12 (grown as a houseplant elsewhere) and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can baltic blue pothos survive winter outside?

It can holiday outdoors in summer once nights are reliably above 5 °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 baltic blue pothos below its minimum temperature?

Below about about 5 °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.