UK hardiness
Is Begonia 'Nonstop Joy White' hardy in the UK?
Begonia × tuberhybrida 'Nonstop Joy White'
More about begonia 'nonstop joy white' in the UK
Begonia 'Nonstop Joy White' and the RHS hardiness rating
Begonia 'Nonstop Joy White' is rated RHS H2 (frost-tender; lift and store tubers over winter) — tender, meaning it withstands winter minimums of about 1 to 5°C. In practice that means it needs a frost-free greenhouse or indoors over winter — a UK frost will kill it. 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 'nonstop joy white' USDA hardiness guide.
Does UK region change it?
Because begonia 'nonstop joy white' 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 'nonstop joy white' in the UK
Overwintering begonia 'nonstop joy white' 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 'Nonstop Joy White' UK hardiness — frequently asked questions
Is begonia 'nonstop joy white' hardy in the UK?
Begonia 'Nonstop Joy White' is rated RHS H2 (frost-tender; lift and store tubers over winter) (tender, hardy to about 1 to 5°C). It is not winter-hardy anywhere in the UK and must be overwintered under cover.
Can begonia 'nonstop joy white' stay outside over winter in the UK?
No. Begonia 'Nonstop Joy White' 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 H2 (frost-tender; lift and store tubers over winter) mean?
RHS hardiness ratings run H1a (needs a heated glasshouse) to H7 (survives below -20°C). Begonia 'Nonstop Joy White''s rating, H2 (frost-tender; lift and store tubers over winter), means tender — it tolerates winter minimums of about 1 to 5°C. The rating is an absolute minimum, not an average.
How do I overwinter begonia 'nonstop joy white' in the UK?
Overwintering begonia 'nonstop joy white' 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 'nonstop joy white' survives?
Because begonia 'nonstop joy white' 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 'nonstop joy white' care
See the full begonia 'nonstop joy white' care guide, its temperature & humidity needs, and the US (USDA) hardiness version of this page.