Cold hardiness & minimum temperature

Is Tradescantia 'Nanouk' (Tradescantia albiflora 'Nanouk')cold hardy? Hardiness zone & min temp

Also called Nanouk, Fantasy Venice, Pink spiderwort, Pink wandering dude, Inch plant 'Nanouk'.

More about tradescantia 'nanouk'

About Tradescantia 'Nanouk'

Tradescantia albiflora 'Nanouk' · also called Nanouk, Fantasy Venice · houseplant

Tradescantia 'Nanouk' is a compact, fast-growing trailing houseplant prized for its candy-striped pink, purple and green foliage. Its one defining need is plenty of bright, indirect light: skimp on light and the pink fades to plain green and the stems go leggy. It also resents soggy roots, so let the surface dry between waterings.

Cold limit: USDA 10-12 (outdoors only in frost-free climates; grown as a houseplant elsewhere) · RHS H1C (needs protection under glass; minimum 5-10°C) (13-24°C)

Watch for — Root rot from overwatering: The single most common killer. Soft, mushy, blackening stems and sudden wilting signal soggy roots. Always let the surface dry, use a free-draining mix and a pot with drainage holes, and water sparingly in winter.

What tradescantia 'nanouk''s hardiness rating actually means

Tradescantia 'Nanouk' 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 (outdoors only in frost-free climates; 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). Tradescantia 'Nanouk' has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for tradescantia 'nanouk' 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 tradescantia 'nanouk' 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 tradescantia 'nanouk' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1c figure above.

Tradescantia 'Nanouk' hardiness — frequently asked questions

Is tradescantia 'nanouk' cold hardy?

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

What is the minimum temperature tradescantia 'nanouk' can survive?

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

What hardiness zone is tradescantia 'nanouk'?

Tradescantia 'Nanouk' is rated USDA 10-12 (outdoors only in frost-free climates; grown as a houseplant elsewhere) and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can tradescantia 'nanouk' 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 tradescantia 'nanouk' 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.