Cold hardiness & minimum temperature

Is Weigela 'Red Prince' (Weigela 'Red Prince')cold hardy? Hardiness zone & min temp

Also called Red Prince Weigela.

More about weigela 'red prince'

About Weigela 'Red Prince'

Weigela 'Red Prince' · also called Red Prince Weigela · flowering

A vigorous deciduous shrub producing bright true-red non-fading trumpet flowers in late spring, with a strong repeat bloom in mid-summer — one of the best re-bloomers in the genus. Mid-green foliage remains clean and disease-resistant through the season. Hardy and easy-care. Mildly-toxic as a precaution.

Cold limit: USDA 4-8 · RHS H7 (-25 to 35°C)

Watch for — Stem dieback: Occasional dieback of individual stems due to winter damage or canker. Prune to healthy wood and disinfect tools between cuts.

What weigela 'red prince''s hardiness rating actually means

Yes — weigela 'red prince' is genuinely cold hardy. Rated RHS H7 and USDA 4-8, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H7 means: Hardy in the severest European continental winters. On the US scale that maps to USDA 4-8 — 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 below about −20 °C. Weigela 'Red Prince' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for weigela 'red prince' as it gets too cold:

It tolerates winter lows to about −20 °C once established.
Below its rated zone, the visible damage is browned or blackened top growth and, in the worst case, a killed crown or root.
First-year, newly planted, or container-grown specimens are noticeably less hardy than established garden plants — the roots are exposed.

Can weigela 'red prince' go outside or overwinter — and where?

Plant it out within USDA 4-8 and it overwinters with little or no help.
It does not want to come indoors — a warm winter room actually weakens a hardy plant by denying it dormancy.
The real risks in its range are waterlogging, wind-rock on young plants, and a late hard frost on new growth — not ordinary winter cold.

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 weigela 'red prince' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Weigela 'Red Prince' hardiness — frequently asked questions

Is weigela 'red prince' cold hardy?

Yes — weigela 'red prince' is genuinely cold hardy. Rated RHS H7 and USDA 4-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Weigela 'Red Prince' is hardy across USDA 4-8; it belongs in the ground or a frost-proof container, not on a windowsill, and many types actively need a cold winter to perform.

What is the minimum temperature weigela 'red prince' can survive?

Minimum survivable temperature is roughly below about −20 °C. Weigela 'Red Prince' is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is weigela 'red prince'?

Weigela 'Red Prince' is rated USDA 4-8 and RHS H7 — Hardy in the severest European continental winters.

Can weigela 'red prince' survive winter outside?

Plant it out within USDA 4-8 and it overwinters with little or no help. It does not want to come indoors — a warm winter room actually weakens a hardy plant by denying it dormancy. The real risks in its range are waterlogging, wind-rock on young plants, and a late hard frost on new growth — not ordinary winter cold.

What happens to weigela 'red prince' below its minimum temperature?

It tolerates winter lows to about −20 °C once established. Below its rated zone, the visible damage is browned or blackened top growth and, in the worst case, a killed crown or root. First-year, newly planted, or container-grown specimens are noticeably less hardy than established garden plants — the roots are exposed.