Cold hardiness & minimum temperature

Is Skinner's Barkeria (Barkeria skinneri)cold hardy? Hardiness zone & min temp

Also called Skinner's Orchid, Guatemala Barkeria.

More about skinner's barkeria

About Skinner's Barkeria

Barkeria skinneri · also called Skinner's Orchid, Guatemala Barkeria · tropical

Barkeria skinneri is a deciduous epiphytic orchid from Mexico and Guatemala producing tall racemes of deep rose-purple flowers in winter. It is Guatemala's national flower. It follows the classic Barkeria pattern of active summer growth followed by a dry leafless winter rest. Considered pet-safe by ASPCA orchid guidance.

Cold limit: USDA 11-12 · RHS H1b (12-32°C)

Watch for — Winter rot: Watering too freely during the leafless dormant phase is the most common cause of plant loss.

What skinner's barkeria's hardiness rating actually means

Skinner's Barkeria 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 — 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). Skinner's Barkeria has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

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

Skinner's Barkeria hardiness — frequently asked questions

Is skinner's barkeria cold hardy?

Skinner's Barkeria 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. Skinner's Barkeria can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature skinner's barkeria can survive?

What hardiness zone is skinner's barkeria?

Skinner's Barkeria is rated USDA 11-12 and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can skinner's barkeria 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 skinner's barkeria 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.