Cold hardiness & minimum temperature

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

Also called Salgar Anthurium, Colombian Velvet Anthurium.

More about anthurium salgarense

About Anthurium Salgarense

Anthurium salgarense · also called Salgar Anthurium, Colombian Velvet Anthurium · tropical

Anthurium salgarense is a large-growing Colombian aroid with broad, heart-shaped, velvety dark-green leaves and prominent pale veining. A sought-after collector species, it wants warm, very humid, bright-indirect conditions and a loose, airy mix. Give it room to size up; mature leaves can become impressively large in good culture.

Cold limit: USDA 11-12 (indoor in most US homes) · RHS H1b (18-29°C)

Watch for — Crispy leaf edges: Driven by humidity dipping below 60% or inconsistent watering. Raise and stabilise humidity, keep the mix evenly moist (not wet) and shield from heating vents and drafts.

What anthurium salgarense's hardiness rating actually means

Anthurium Salgarense 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 Salgarense has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Anthurium Salgarense hardiness — frequently asked questions

Is anthurium salgarense cold hardy?

Anthurium Salgarense 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 Salgarense 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 salgarense can survive?

What hardiness zone is anthurium salgarense?

Anthurium Salgarense 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 salgarense 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 salgarense 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.