Cold hardiness & minimum temperature

Is Burgundy Rubber Plant (Ficus elastica 'Burgundy')cold hardy? Hardiness zone & min temp

Also called Burgundy rubber plant, black rubber plant.

More about burgundy rubber plant

About Burgundy Rubber Plant

Ficus elastica 'Burgundy' · also called Burgundy rubber plant, black rubber plant · tropical

The Burgundy rubber plant is a dark-leaved selection of Ficus elastica prized for thick, glossy foliage that flushes deep oxblood to near-black in bright light. An easy, fast-growing upright houseplant, it thrives in bright indirect light with steady but not constant moisture, and resents cold drafts and abrupt position changes, which trigger leaf drop.

Cold limit: USDA 10-12 (indoor in most US and UK homes) · RHS H1b (16-29°C)

Watch for — Leaf drop after a move: Ficus elastica hates change — relocation, drafts or sudden temperature swings cause sudden leaf shedding. Settle it in one stable spot away from doors and vents.

What burgundy rubber plant's hardiness rating actually means

Burgundy Rubber Plant 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 US and UK 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 10 °C (sustained cold below this is damaging). Burgundy Rubber Plant has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Burgundy Rubber Plant hardiness — frequently asked questions

Is burgundy rubber plant cold hardy?

Burgundy Rubber Plant 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. Burgundy Rubber Plant can only live outside year-round in genuinely frost-free climates (roughly USDA 10-12 (indoor in most US and UK homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature burgundy rubber plant can survive?

What hardiness zone is burgundy rubber plant?

Burgundy Rubber Plant is rated USDA 10-12 (indoor in most US and UK homes) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can burgundy rubber plant 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 burgundy rubber plant 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.