Cold hardiness & minimum temperature

Is Pink Nerve Plant (Fittonia albivenis 'Frankie')cold hardy? Hardiness zone & min temp

Also called Pink Nerve Plant, Frankie Nerve Plant, Pink Fittonia.

More about pink nerve plant

About Pink Nerve Plant

Fittonia albivenis 'Frankie' · also called Pink Nerve Plant, Frankie Nerve Plant · houseplant

A compact, creeping cultivar of the nerve plant displaying rich green leaves intricately threaded with vivid pink veins. Native to tropical rainforests of South America, it thrives in warm, high-humidity environments with bright indirect light. Excellent for terrariums, kokedama, or as a desktop plant; confirmed non-toxic to pets and people.

Cold limit: USDA 11-12 · RHS H1a (18–26°C (min. 15°C))

Watch for — Brown, crispy leaf tips: Low humidity is the most common cause. Increase ambient moisture with a pebble tray or humidifier. Also check for draughts from air conditioning or heating vents, and ensure the plant is not pressed against cold glass in winter.

What pink nerve plant's hardiness rating actually means

Pink Nerve Plant 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 H1a means: Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever. On the US scale that maps to USDA 11-12 — 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 above about 15 °C (warm, never cold). Pink Nerve Plant has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for pink nerve plant as it gets too cold:

Below about above about 15 °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 pink nerve plant go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above above 15 °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 pink nerve plant can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Pink Nerve Plant hardiness — frequently asked questions

Is pink nerve plant cold hardy?

Pink Nerve Plant 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. Pink Nerve Plant can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature pink nerve plant can survive?

Minimum survivable temperature is roughly above about 15 °C (warm, never cold). Pink Nerve Plant has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is pink nerve plant?

Pink Nerve Plant is rated USDA 11-12 and RHS H1a — Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever.

Can pink nerve plant survive winter outside?

It can holiday outdoors in summer once nights are reliably above above 15 °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 pink nerve plant below its minimum temperature?

Below about above about 15 °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.