Cold hardiness & minimum temperature

Is Metallic Peperomia (Peperomia metallica)cold hardy? Hardiness zone & min temp

Also called Metallic Peperomia, Peperomia metallica 'Colombiana', Red-leaf metallic peperomia.

More about metallic peperomia

About Metallic Peperomia

Peperomia metallica · also called Metallic Peperomia, Peperomia metallica 'Colombiana' · houseplant

Metallic Peperomia (Peperomia metallica) is a compact semi-succulent houseplant prized for narrow, shimmering bronze-green leaves with red undersides. Give it bright indirect light, let the top of the soil dry between waterings, and use an airy, well-drained mix. It stays small and is considered pet-safe within the non-toxic Peperomia genus.

Cold limit: 18-24°C

Watch for — Leaf drop from cold or drafts: Sudden leaf loss often follows exposure to temperatures below about 10°C (50°F), cold drafts, or hot radiator air. Keep it in a stable 18-24°C spot away from doors, vents and heat sources.

What metallic peperomia's hardiness rating actually means

Metallic Peperomia 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 not formally rated (treat as tender) — 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). Metallic Peperomia has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Metallic Peperomia hardiness — frequently asked questions

Is metallic peperomia cold hardy?

Metallic Peperomia 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. Metallic Peperomia can only live outside year-round in genuinely frost-free climates (roughly USDA not formally rated (treat as tender)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature metallic peperomia can survive?

What hardiness zone is metallic peperomia?

Metallic Peperomia is rated USDA not formally rated (treat as tender) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can metallic peperomia 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 metallic peperomia 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.