Cold hardiness & minimum temperature

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

Also called Dark-Blade Anthurium, Black-Leaf Anthurium.

More about anthurium nigrolaminum

About Anthurium Nigrolaminum

Anthurium nigrolaminum · also called Dark-Blade Anthurium, Black-Leaf Anthurium · tropical

Anthurium nigrolaminum is a Colombian aroid with elongated, dark green to near-black leathery leaves and a subtle sheen, the 'Gigi' form being especially sought after. Like other tropical anthuriums it wants warmth, high humidity and bright indirect light in a chunky, fast-draining aroid mix. Keep it evenly moist, never wet, and away from cold draughts.

Cold limit: USDA 11-12 (indoor or greenhouse only in most climates) · RHS H1a (18-27C)

Watch for — Slow, stunted growth: Cold conditions or low humidity. Keep above 18C with stable high humidity for steady leaf production.

What anthurium nigrolaminum's hardiness rating actually means

Anthurium Nigrolaminum 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 H1a means: Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever. On the US scale that maps to USDA 11-12 (indoor or greenhouse only in most climates) — 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 above about 15 °C (warm, never cold). Anthurium Nigrolaminum has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for anthurium nigrolaminum as it gets too cold:

Below about above about 15 °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 nigrolaminum go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above above 15 °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 nigrolaminum can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Anthurium Nigrolaminum hardiness — frequently asked questions

Is anthurium nigrolaminum cold hardy?

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

What is the minimum temperature anthurium nigrolaminum can survive?

Minimum survivable temperature is roughly above about 15 °C (warm, never cold). Anthurium Nigrolaminum has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is anthurium nigrolaminum?

Anthurium Nigrolaminum is rated USDA 11-12 (indoor or greenhouse only in most climates) and RHS H1a — Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever.

Can anthurium nigrolaminum survive winter outside?

It can holiday outdoors in summer once nights are reliably above above 15 °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 nigrolaminum below its minimum temperature?

Below about above about 15 °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.