Cold hardiness & minimum temperature

Is Rose-painted Calathea (Dottie) (Goeppertia roseopicta)cold hardy? Hardiness zone & min temp

Also called Rose-painted Calathea, Calathea Dottie, Jungle Rose, Rose Painted Prayer Plant, Calathea roseopicta 'Dottie'.

More about rose-painted calathea (dottie)

About Rose-painted Calathea (Dottie)

Goeppertia roseopicta · also called Rose-painted Calathea, Calathea Dottie · houseplant

The Rose-painted Calathea 'Dottie' (Goeppertia roseopicta) is a compact Marantaceae prayer plant prized for near-black leaves edged in vivid pink. It wants bright indirect light, evenly moist soil watered with distilled or rainwater, and high humidity. ASPCA lists Calathea as non-toxic to cats and dogs, so it is pet-safe.

Cold limit: USDA 11-12 (tender; grown as a houseplant in cooler climates) (18-24C)

Watch for — Leaves not moving at night: The prayer-like nyctinasty can stall under stress from inconsistent watering or temperature swings. Keep moisture even and temperatures stable at 18-24C, away from draughts.

What rose-painted calathea (dottie)'s hardiness rating actually means

Rose-painted Calathea (Dottie) 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 (tender; grown as a houseplant in cooler climates) — 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). Rose-painted Calathea (Dottie) has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for rose-painted calathea (dottie) 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 rose-painted calathea (dottie) 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 rose-painted calathea (dottie) can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Rose-painted Calathea (Dottie) hardiness — frequently asked questions

Is rose-painted calathea (dottie) cold hardy?

Rose-painted Calathea (Dottie) 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. Rose-painted Calathea (Dottie) can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12 (tender; grown as a houseplant in cooler climates)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature rose-painted calathea (dottie) can survive?

What hardiness zone is rose-painted calathea (dottie)?

Rose-painted Calathea (Dottie) is rated USDA 11-12 (tender; grown as a houseplant in cooler climates) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can rose-painted calathea (dottie) 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 rose-painted calathea (dottie) 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.