Cold hardiness & minimum temperature

Is Begonia × tuberhybrida 'Non-Stop Mocca White' (Begonia × tuberhybrida 'Non-Stop Mocca White')cold hardy? Hardiness zone & min temp

Also called non-stop mocca white begonia, mocca tuberous begonia.

More about begonia × tuberhybrida 'non-stop mocca white'

About Begonia × tuberhybrida 'Non-Stop Mocca White'

Begonia × tuberhybrida 'Non-Stop Mocca White' · also called non-stop mocca white begonia, mocca tuberous begonia · flowering

A compact tuberous begonia prized for dark chocolate-bronze foliage that frames double, camellia-like white blooms from summer to first frost. Mounding and free-flowering, it thrives in containers, baskets and shaded beds. Lift and store the tubers dry over winter, or grow it as a cool-house pot plant in bright, filtered light.

Cold limit: USDA 9-11 (tubers lifted and stored frost-free elsewhere; grown as an annual) · RHS H2 (13-24°C)

Watch for — Bud drop or sparse flowering: Usually from temperature swings, irregular watering or too little light. Keep moisture even and provide bright, filtered light.

What begonia × tuberhybrida 'non-stop mocca white''s hardiness rating actually means

Hardiness works differently for begonia × tuberhybrida 'non-stop mocca white': it is grown as a seasonal crop, not overwintered. The question is not "what zone" but "how long is your frost-free growing window". Its RHS rating of H2 means: Tender — survives a frost-free greenhouse or a very mild, sheltered spot. On the US scale that maps to USDA 9-11 (tubers lifted and stored frost-free elsewhere; grown as an annual) — 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

As an annual crop, its "minimum temperature" is the first hard frost — that is the end of the plant's life, not a survivable low. Many types are also damaged by light frost (around 0 °C).

Concretely, for begonia × tuberhybrida 'non-stop mocca white' as it gets too cold:

Light frost (around 0 to −2 °C) damages or kills tender summer crops outright; cold-hardy types take a few degrees of frost.
The plant does not "survive winter" — its life cycle simply ends, by design, when frost arrives or it finishes cropping.
A surprise late spring frost can also kill young transplants set out too early, before the season even starts.

Can begonia × tuberhybrida 'non-stop mocca white' go outside or overwinter — and where?

Time it to your frost dates: sow or plant out after the last spring frost, and aim to harvest before the first autumn frost.
In short-season zones, start it indoors or under cover to stretch the effective growing window.
Hardier crops in this group can be sown for an autumn or overwintered harvest in mild zones — check the specific crop.

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 begonia × tuberhybrida 'non-stop mocca white' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H2 figure above.

Frost protection for borderline begonia × tuberhybrida 'non-stop mocca white'

Begonia × tuberhybrida 'Non-Stop Mocca White' is right on a hardiness edge in many gardens, so if you are pushing it, these measures buy it the margin it needs:

Use fleece, cloches or a cold frame at each end of the season to dodge a borderline frost and add growing weeks.
Have row cover ready for an unexpected late spring or early autumn frost.
Know your local last- and first-frost dates and count back the crop’s days-to-maturity to schedule the sowing.

Begonia × tuberhybrida 'Non-Stop Mocca White' hardiness — frequently asked questions

Is begonia × tuberhybrida 'non-stop mocca white' cold hardy?

Hardiness works differently for begonia × tuberhybrida 'non-stop mocca white': it is grown as a seasonal crop, not overwintered. The question is not "what zone" but "how long is your frost-free growing window". A seasonal crop, not a perennial. Begonia × tuberhybrida 'Non-Stop Mocca White' is grown 9-11 (tubers lifted and stored frost-free elsewhere; grown as an annual); you sow after the last frost and harvest before the first one, then start again next year.

What is the minimum temperature begonia × tuberhybrida 'non-stop mocca white' can survive?

As an annual crop, its "minimum temperature" is the first hard frost — that is the end of the plant's life, not a survivable low. Many types are also damaged by light frost (around 0 °C).

What hardiness zone is begonia × tuberhybrida 'non-stop mocca white'?

Begonia × tuberhybrida 'Non-Stop Mocca White' is rated USDA 9-11 (tubers lifted and stored frost-free elsewhere; grown as an annual) and RHS H2 — Tender — survives a frost-free greenhouse or a very mild, sheltered spot.

Can begonia × tuberhybrida 'non-stop mocca white' survive winter outside?

Time it to your frost dates: sow or plant out after the last spring frost, and aim to harvest before the first autumn frost. In short-season zones, start it indoors or under cover to stretch the effective growing window. Hardier crops in this group can be sown for an autumn or overwintered harvest in mild zones — check the specific crop.

How do I protect begonia × tuberhybrida 'non-stop mocca white' from frost?

Use fleece, cloches or a cold frame at each end of the season to dodge a borderline frost and add growing weeks. Have row cover ready for an unexpected late spring or early autumn frost. Know your local last- and first-frost dates and count back the crop’s days-to-maturity to schedule the sowing.