Cold hardiness & minimum temperature

Is Notch-Tipped Peperomia (Peperomia retusa)cold hardy? Hardiness zone & min temp

Also called Notch-tipped peperomia, African peperomia.

More about notch-tipped peperomia

About Notch-Tipped Peperomia

Peperomia retusa · also called Notch-tipped peperomia, African peperomia · houseplant

Notch-tipped peperomia is a small, slightly succulent perennial herb native to tropical and southern Africa — from West Africa through East Africa to KwaZulu-Natal in South Africa — where it grows epiphytically on mossy tree trunks and lithophytically on boulders in moist evergreen forest at elevations up to 2,500 m. Its leaves are obovate to elliptic and notably small, reaching only 5–15 cm (2–6 in) in height as a whole plant. The name retusa refers to the notched or shallowly indented leaf tips. As with all peperomias, restraint with water is the key care rule — it prefers to dry slightly between waterings and resents waterlogged conditions. The ASPCA lists Peperomia as non-toxic to cats and dogs.

Cold limit: USDA 10–12 (indoor in most climates) · RHS H1b (15–28 °C)

What notch-tipped peperomia's hardiness rating actually means

Notch-Tipped 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 10–12 (indoor in most 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). Notch-Tipped Peperomia has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Notch-Tipped Peperomia hardiness — frequently asked questions

Is notch-tipped peperomia cold hardy?

Notch-Tipped 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. Notch-Tipped Peperomia can only live outside year-round in genuinely frost-free climates (roughly USDA 10–12 (indoor in most climates)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature notch-tipped peperomia can survive?

What hardiness zone is notch-tipped peperomia?

Notch-Tipped Peperomia is rated USDA 10–12 (indoor in most climates) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can notch-tipped 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 notch-tipped 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.