Cold hardiness & minimum temperature

Is Ecuador Angel's Trumpet (Brugmansia versicolor)cold hardy? Hardiness zone & min temp

Also called Ecuador Angel's Trumpet, Peach Angel's Trumpet.

More about ecuador angel's trumpet

About Ecuador Angel's Trumpet

Brugmansia versicolor · also called Ecuador Angel's Trumpet, Peach Angel's Trumpet · flowering

Brugmansia versicolor from coastal Ecuador produces some of the longest trumpets of any Brugmansia species — up to 50 cm — in shades of white to peachy-apricot that deepen with age. The intensely fragrant flowers are strongly perfumed in the evening. All parts are severely toxic. Best grown in large containers that can be overwintered indoors in temperate climates.

Cold limit: USDA 10–12 · RHS H1c (10–32°C)

Watch for — Flower drop before fully opening: Usually triggered by sudden temperature drops, underwatering, or pest pressure — ensure consistent moisture and shelter from cold night winds during the flowering season.

What ecuador angel's trumpet's hardiness rating actually means

Ecuador Angel's Trumpet 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 H1c means: Warm-temperate — can summer outdoors but must come in well before the first frost. On the US scale that maps to USDA 10–12 — 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 5 °C (and never frost). Ecuador Angel's Trumpet has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for ecuador angel's trumpet as it gets too cold:

Below about about 5 °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 ecuador angel's trumpet go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above 5 °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 ecuador angel's trumpet can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1c figure above.

Ecuador Angel's Trumpet hardiness — frequently asked questions

Is ecuador angel's trumpet cold hardy?

Ecuador Angel's Trumpet 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. Ecuador Angel's Trumpet can only live outside year-round in genuinely frost-free climates (roughly USDA 10–12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature ecuador angel's trumpet can survive?

Minimum survivable temperature is roughly about 5 °C (and never frost). Ecuador Angel's Trumpet has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is ecuador angel's trumpet?

Ecuador Angel's Trumpet is rated USDA 10–12 and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can ecuador angel's trumpet survive winter outside?

It can holiday outdoors in summer once nights are reliably above 5 °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 ecuador angel's trumpet below its minimum temperature?

Below about about 5 °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.