Cold hardiness & minimum temperature

Is White Tiger Jaws (Faucaria candida)cold hardy? Hardiness zone & min temp

Also called White Tiger Jaws, White-Flowered Tiger Jaws.

More about white tiger jaws

About White Tiger Jaws

Faucaria candida · also called White Tiger Jaws, White-Flowered Tiger Jaws · houseplant

Faucaria candida is a small, clump-forming South African succulent with fleshy, toothed leaves arranged in opposing pairs that resemble an open jaw. It is distinguished from the common tiger jaws by its pure white autumn flowers with a yellow centre. It thrives in full sun with minimal water and a cool, dry winter rest.

Cold limit: USDA 10–11 · RHS H1c (7–35°C)

Watch for — Root rot from overwatering: The most common problem, especially in winter. The base of the plant becomes mushy and the leaves collapse. Always let soil dry fully between waterings and reduce watering to near-zero in cool months.

What white tiger jaws's hardiness rating actually means

White Tiger Jaws 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 10–11 — 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). White Tiger Jaws has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

White Tiger Jaws hardiness — frequently asked questions

Is white tiger jaws cold hardy?

White Tiger Jaws 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. White Tiger Jaws can only live outside year-round in genuinely frost-free climates (roughly USDA 10–11); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature white tiger jaws can survive?

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

What hardiness zone is white tiger jaws?

White Tiger Jaws is rated USDA 10–11 and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can white tiger jaws 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 white tiger jaws 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.