UK hardiness
Is Calathea orbifolia hardy in the UK?
Goeppertia orbifolia (syn. Calathea orbifolia)
More about calathea orbifolia in the UK
Calathea orbifolia and the RHS hardiness rating
Calathea orbifolia is rated RHS H1a (min 15°C; grow under glass / as a houseplant) — heated glasshouse — tropical, meaning it withstands winter minimums of about above 15°C. In practice that means it cannot live outdoors in the UK at any time; a warm indoor room or heated glasshouse only. The RHS rating describes an absolute minimum temperature, not an average: a single hard frost below its band is what does the damage, so the question is always "what is the coldest night my garden gets?", not "what is a typical winter here?".
This follows the RHS plant hardiness rating system (H1a–H7), the UK standard. For the US growing-zone view, see the calathea orbifolia USDA hardiness guide.
Does UK region change it?
Because calathea orbifolia is frost-tender, UK region matters less than the simple rule: it does not stay outdoors over winter anywhere in the UK. Treat any time outside as a summer holiday — bring it back indoors once nights drop toward 10°C, well before the first frost, and acclimatise it over a week each way so the leaves do not shock.
Overwintering calathea orbifolia in the UK
Overwintering calathea orbifolia in the UK means bringing it in: a bright, frost-free room or a heated glasshouse, watered sparingly while growth slows. Do not leave it against cold glass or near an unheated porch. Move it back out only after the last spring frost has passed for your area.
Calathea orbifolia UK hardiness — frequently asked questions
Is calathea orbifolia hardy in the UK?
Calathea orbifolia is rated RHS H1a (min 15°C; grow under glass / as a houseplant) (heated glasshouse — tropical, hardy to about above 15°C). It is not winter-hardy anywhere in the UK and must be overwintered under cover.
Can calathea orbifolia stay outside over winter in the UK?
No. Calathea orbifolia is frost-tender — a UK frost will kill it. Bring it indoors or into a frost-free greenhouse before the first autumn frost and return it outside only after the last spring frost.
What does RHS H1a (min 15°C; grow under glass / as a houseplant) mean?
RHS hardiness ratings run H1a (needs a heated glasshouse) to H7 (survives below -20°C). Calathea orbifolia's rating, H1a (min 15°C; grow under glass / as a houseplant), means heated glasshouse — tropical — it tolerates winter minimums of about above 15°C. The rating is an absolute minimum, not an average.
How do I overwinter calathea orbifolia in the UK?
Overwintering calathea orbifolia in the UK means bringing it in: a bright, frost-free room or a heated glasshouse, watered sparingly while growth slows. Do not leave it against cold glass or near an unheated porch. Move it back out only after the last spring frost has passed for your area.
Does UK region change whether calathea orbifolia survives?
Because calathea orbifolia is frost-tender, UK region matters less than the simple rule: it does not stay outdoors over winter anywhere in the UK. Treat any time outside as a summer holiday — bring it back indoors once nights drop toward 10°C, well before the first frost, and acclimatise it over a week each way so the leaves do not shock.
More calathea orbifolia care
See the full calathea orbifolia care guide, its temperature & humidity needs, and the US (USDA) hardiness version of this page.