Cold hardiness & minimum temperature

Is Cuming's Medinilla (Medinilla cumingii)cold hardy? Hardiness zone & min temp

Also called Cuming's Medinilla, Chandelier Tree, Philippine Orchid.

More about cuming's medinilla

About Cuming's Medinilla

Medinilla cumingii · also called Cuming's Medinilla, Chandelier Tree · tropical

A spectacular epiphytic shrub from the Philippine island of Luzon, producing pendulous 25 cm (10 in) chandelier-like clusters of hot-pink flowers that mature into deep blue-purple berries. Grown for its bold flowers and large, glossy foliage. Needs warmth, high humidity, and excellent drainage to thrive indoors.

Cold limit: USDA 10–11 · RHS H1a (18–27 °C)

Watch for — No flowers: Like other medinillas, M. cumingii benefits from a cool, drier winter rest at around 18 °C (65 °F) to initiate the next season's blooms. Without this rest phase, the plant may remain vegetative.

What cuming's medinilla's hardiness rating actually means

Cuming's Medinilla 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 10–11 — 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). Cuming's Medinilla has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for cuming's medinilla 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 cuming's medinilla 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 cuming's medinilla can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1a figure above.

Cuming's Medinilla hardiness — frequently asked questions

Is cuming's medinilla cold hardy?

Cuming's Medinilla 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. Cuming's Medinilla can only live outside year-round in genuinely frost-free climates (roughly USDA 10–11); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature cuming's medinilla can survive?

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

What hardiness zone is cuming's medinilla?

Cuming's Medinilla is rated USDA 10–11 and RHS H1a — Tropical — needs a heated room or greenhouse; no frost tolerance whatsoever.

Can cuming's medinilla 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 cuming's medinilla 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.