Cold hardiness & minimum temperature

Is Calathea Ornata Dark Pink (Goeppertia ornata 'Dark Pink')cold hardy? Hardiness zone & min temp

Also called dark pink pinstripe calathea.

More about calathea ornata dark pink

About Calathea Ornata Dark Pink

Goeppertia ornata 'Dark Pink' · also called dark pink pinstripe calathea · houseplant

Goeppertia ornata 'Dark Pink' is the pinstripe calathea, its glossy dark-green leaves ruled with fine deep-pink stripes and rich purple undersides. A pet-safe prayer plant from South American rainforests, it folds upright at night to flash those undersides. It needs bright indirect light, high humidity, warmth, and consistently moist, mineral-free soil.

Cold limit: USDA 11-12 (grown indoors in most US homes) · RHS H1b (18-27°C)

What calathea ornata dark pink's hardiness rating actually means

Calathea Ornata Dark Pink 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 11-12 (grown indoors 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). Calathea Ornata Dark Pink has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for calathea ornata dark pink 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 calathea ornata dark pink 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 calathea ornata dark pink can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Calathea Ornata Dark Pink hardiness — frequently asked questions

Is calathea ornata dark pink cold hardy?

Calathea Ornata Dark Pink 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. Calathea Ornata Dark Pink can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12 (grown indoors in most US homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature calathea ornata dark pink can survive?

What hardiness zone is calathea ornata dark pink?

Calathea Ornata Dark Pink is rated USDA 11-12 (grown indoors 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 calathea ornata dark pink 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 calathea ornata dark pink 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.