Cold hardiness & minimum temperature

Is Doublefile Viburnum 'Mariesii' (Viburnum plicatum f. tomentosum 'Mariesii')cold hardy? Hardiness zone & min temp

Also called Doublefile Viburnum.

More about doublefile viburnum 'mariesii'

About Doublefile Viburnum 'Mariesii'

Viburnum plicatum f. tomentosum 'Mariesii' · also called Doublefile Viburnum · flowering

Doublefile Viburnum 'Mariesii' is a tiered, horizontally branched deciduous shrub prized for its strongly layered habit and flat lacecap clusters of white spring flowers held above the foliage in two opposing rows. Pleated dark-green leaves turn burgundy in autumn, followed by red-to-black fruit. It thrives in full sun to part shade in moist, well-drained soil.

Cold limit: USDA 5-8 · RHS H6 (-29 to 30°C)

Watch for — Viburnum leaf beetle damage: Larvae and adults skeletonise foliage in spring and summer. Inspect new growth, remove egg-laden twigs in winter, and tolerate or treat minor outbreaks rather than spraying broadly.

What doublefile viburnum 'mariesii''s hardiness rating actually means

Yes — doublefile viburnum 'mariesii' is genuinely cold hardy. Rated RHS H6 and USDA 5-8, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H6 means: Hardy throughout the UK and northern Europe. On the US scale that maps to USDA 5-8 — 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 about −20 to −15 °C. Doublefile Viburnum 'Mariesii' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for doublefile viburnum 'mariesii' as it gets too cold:

It tolerates winter lows to about −20 to −15 °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 doublefile viburnum 'mariesii' go outside or overwinter — and where?

Plant it out within USDA 5-8 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 doublefile viburnum 'mariesii' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Doublefile Viburnum 'Mariesii' hardiness — frequently asked questions

Is doublefile viburnum 'mariesii' cold hardy?

Yes — doublefile viburnum 'mariesii' is genuinely cold hardy. Rated RHS H6 and USDA 5-8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Doublefile Viburnum 'Mariesii' is hardy across USDA 5-8; 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 doublefile viburnum 'mariesii' can survive?

Minimum survivable temperature is roughly about −20 to −15 °C. Doublefile Viburnum 'Mariesii' is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is doublefile viburnum 'mariesii'?

Doublefile Viburnum 'Mariesii' is rated USDA 5-8 and RHS H6 — Hardy throughout the UK and northern Europe.

Can doublefile viburnum 'mariesii' survive winter outside?

Plant it out within USDA 5-8 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 doublefile viburnum 'mariesii' below its minimum temperature?

It tolerates winter lows to about −20 to −15 °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.