Cold hardiness & minimum temperature

Is Anthurium queremalense (Anthurium queremalense)cold hardy? Hardiness zone & min temp

Also called Queramel anthurium.

More about anthurium queremalense

About Anthurium queremalense

Anthurium queremalense · also called Queramel anthurium · tropical

Anthurium queremalense is a Colombian aroid, described from the Queremal region, grown by collectors for its bold, leathery dark-green leaves. A semi-epiphytic cloud-forest foliage species, it is valued for its form and texture rather than flowers. It wants bright indirect light, very high humidity, cool-to-warm conditions and an open, fast-draining epiphyte mix.

Cold limit: USDA 11-12 (indoor in most US homes) · RHS H1b (16-26°C)

Watch for — Heat stress: Prolonged temperatures much above the high 20s°C can stress this cooler-growing plant; keep it out of hot, dry spots.

What anthurium queremalense's hardiness rating actually means

Anthurium queremalense 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 11-12 (indoor 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). Anthurium queremalense has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Anthurium queremalense hardiness — frequently asked questions

Is anthurium queremalense cold hardy?

Anthurium queremalense 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. Anthurium queremalense can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12 (indoor in most US homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature anthurium queremalense can survive?

What hardiness zone is anthurium queremalense?

Anthurium queremalense is rated USDA 11-12 (indoor 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 anthurium queremalense 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 anthurium queremalense 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.