Cold hardiness & minimum temperature

Is Philodendron 'Florida Green' (Philodendron 'Florida Green')cold hardy? Hardiness zone & min temp

Also called Florida Green Philodendron, Philodendron Florida, Florida Green.

More about philodendron 'florida green'

About Philodendron 'Florida Green'

Philodendron 'Florida Green' · also called Florida Green Philodendron, Philodendron Florida · tropical

Philodendron 'Florida Green' is a fast-growing climbing aroid hybrid (P. squamiferum x P. pedatum) prized for glossy, deeply lobed green leaves on reddish petioles. It wants bright indirect light, a chunky well-draining mix and a moss pole. Like all philodendrons it is ASPCA-listed as toxic to cats and dogs.

Cold limit: USDA USDA 9b-11 outdoors; grown as a houseplant elsewhere (18-29 C)

Watch for — Root rot / mushy base: Caused by soggy, dense soil and cold-plus-wet conditions. Unpot, trim soft black roots, and repot into fresh chunky aroid mix in a clean pot with drainage.

What philodendron 'florida green''s hardiness rating actually means

Philodendron 'Florida Green' 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 USDA 9b-11 outdoors; grown as a houseplant elsewhere — 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 'Florida Green' has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Philodendron 'Florida Green' hardiness — frequently asked questions

Is philodendron 'florida green' cold hardy?

Philodendron 'Florida Green' 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 'Florida Green' can only live outside year-round in genuinely frost-free climates (roughly USDA USDA 9b-11 outdoors; grown as a houseplant elsewhere); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature philodendron 'florida green' can survive?

What hardiness zone is philodendron 'florida green'?

Philodendron 'Florida Green' is rated USDA USDA 9b-11 outdoors; grown as a houseplant elsewhere and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can philodendron 'florida green' 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 'florida green' 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.