Cold hardiness & minimum temperature

Is Jaboticaba (Plinia cauliflora)cold hardy? Hardiness zone & min temp

Also called Jaboticaba, Brazilian grape tree.

More about jaboticaba

About Jaboticaba

Plinia cauliflora · also called Jaboticaba, Brazilian grape tree · tropical

Jaboticaba is a slow-growing Brazilian evergreen tree famous for cauliflory: its grape-like purple-black fruit form directly on the trunk and main branches. The sweet, jelly-like pulp is eaten fresh or made into wine and jelly. Highly ornamental with peeling bark and flushes of pinkish new growth, it is well suited to large containers in cooler climates.

Cold limit: USDA 9b-11 (tolerates brief light frost when mature; protect young trees) · RHS H1c (18-30°C)

What jaboticaba's hardiness rating actually means

Jaboticaba 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 9b-11 (tolerates brief light frost when mature; protect young trees) — 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). Jaboticaba has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Jaboticaba hardiness — frequently asked questions

Is jaboticaba cold hardy?

Jaboticaba 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. Jaboticaba can only live outside year-round in genuinely frost-free climates (roughly USDA 9b-11 (tolerates brief light frost when mature; protect young trees)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature jaboticaba can survive?

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

What hardiness zone is jaboticaba?

Jaboticaba is rated USDA 9b-11 (tolerates brief light frost when mature; protect young trees) and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can jaboticaba 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 jaboticaba 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.