Cold hardiness & minimum temperature

Is Philodendron Burle Marx (Philodendron burle-marxii)cold hardy? Hardiness zone & min temp

Also called Burle Marx Philodendron, Burle Marx.

More about philodendron burle marx

About Philodendron Burle Marx

Philodendron burle-marxii · also called Burle Marx Philodendron, Burle Marx · houseplant

Philodendron Burle Marx is a fast, mounding aroid with glossy, elongated heart-shaped leaves on short petioles. Named for Brazilian landscape architect Roberto Burle Marx, it spreads sideways rather than climbing high, making dense clumps. It tolerates a range of indoor light, forgives occasional neglect, and roots readily from stem cuttings, making it an easy collector's entry-level Philodendron.

Cold limit: USDA 10-12 (grown indoors in most US homes) · RHS H1b (18-29°C)

What philodendron burle marx's hardiness rating actually means

Philodendron Burle Marx 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 (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 10 °C (sustained cold below this is damaging). Philodendron Burle Marx has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Philodendron Burle Marx hardiness — frequently asked questions

Is philodendron burle marx cold hardy?

Philodendron Burle Marx 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. Philodendron Burle Marx 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 philodendron burle marx can survive?

What hardiness zone is philodendron burle marx?

Philodendron Burle Marx is rated USDA 10-12 (grown indoors in most US homes) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can philodendron burle marx 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 philodendron burle marx 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.