UK hardiness
Is Begonia 'Glowing Embers' hardy in the UK?
Begonia × hiemalis 'Glowing Embers'
More about begonia 'glowing embers' in the UK
Begonia 'Glowing Embers' and the RHS hardiness rating
Begonia 'Glowing Embers' is rated RHS H1c — warm temperate, meaning it withstands winter minimums of about 5 to 10°C. In practice that means it fine outdoors through most UK summers but must come in before the first frost. 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 begonia 'glowing embers' USDA hardiness guide.
Does UK region change it?
Because begonia 'glowing embers' 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 begonia 'glowing embers' in the UK
Overwintering begonia 'glowing embers' 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.
Begonia 'Glowing Embers' UK hardiness — frequently asked questions
Is begonia 'glowing embers' hardy in the UK?
Begonia 'Glowing Embers' is rated RHS H1c (warm temperate, hardy to about 5 to 10°C). It is not winter-hardy anywhere in the UK and must be overwintered under cover.
Can begonia 'glowing embers' stay outside over winter in the UK?
No. Begonia 'Glowing Embers' 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 H1c mean?
RHS hardiness ratings run H1a (needs a heated glasshouse) to H7 (survives below -20°C). Begonia 'Glowing Embers''s rating, H1c, means warm temperate — it tolerates winter minimums of about 5 to 10°C. The rating is an absolute minimum, not an average.
How do I overwinter begonia 'glowing embers' in the UK?
Overwintering begonia 'glowing embers' 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 begonia 'glowing embers' survives?
Because begonia 'glowing embers' 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 begonia 'glowing embers' care
See the full begonia 'glowing embers' care guide, its temperature & humidity needs, and the US (USDA) hardiness version of this page.