Cold hardiness & minimum temperature

Is Ceropegia Sandersonii (Ceropegia sandersonii)cold hardy? Hardiness zone & min temp

Also called Parachute Plant, Fountain Flower.

More about ceropegia sandersonii

About Ceropegia Sandersonii

Ceropegia sandersonii · also called Parachute Plant, Fountain Flower · flowering

Ceropegia sandersonii is a fast, semi-succulent trailing vine from southern Africa, prized for its bizarre green-and-white parachute-shaped flowers that trap flies for pollination. The fleshy, heart-shaped leaves store water, so it tolerates neglect. Give it bright indirect light, a gritty mix, and let it dry between waterings to flower well indoors.

Cold limit: USDA 10-12 (grown indoors in most US homes) · RHS H1c (16-27°C)

What ceropegia sandersonii's hardiness rating actually means

Ceropegia Sandersonii 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 (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 5 °C (and never frost). Ceropegia Sandersonii has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Ceropegia Sandersonii hardiness — frequently asked questions

Is ceropegia sandersonii cold hardy?

Ceropegia Sandersonii 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. Ceropegia Sandersonii can only live outside year-round in genuinely frost-free climates (roughly USDA 10-12 (grown indoors in most US homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature ceropegia sandersonii can survive?

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

What hardiness zone is ceropegia sandersonii?

Ceropegia Sandersonii is rated USDA 10-12 (grown indoors in most US homes) and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can ceropegia sandersonii 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 ceropegia sandersonii 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.