Cold hardiness & minimum temperature

Is Marginata Wood Rush (Luzula sylvatica 'Marginata')cold hardy? Hardiness zone & min temp

Also called Marginata Wood Rush, Variegated Great Wood Rush, Gold-margined Wood Rush.

More about marginata wood rush

About Marginata Wood Rush

Luzula sylvatica 'Marginata' · also called Marginata Wood Rush, Variegated Great Wood Rush · flowering

A garden cultivar of the great wood rush with attractive cream-to-yellow margined leaves and the same outstanding shade tolerance as the species. Forms a slowly spreading evergreen carpet 30–60 cm tall. Excellent for dry shade ground cover under trees or in shaded borders. Not listed as toxic by the ASPCA.

Cold limit: USDA 5-9 · RHS H7 (−20–30°C)

What marginata wood rush's hardiness rating actually means

Yes — marginata wood rush is genuinely cold hardy. Rated RHS H7 and USDA 5-9, 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 5-9 — 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. Marginata Wood Rush is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for marginata wood rush 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 marginata wood rush go outside or overwinter — and where?

Plant it out within USDA 5-9 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 marginata wood rush can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Marginata Wood Rush hardiness — frequently asked questions

Is marginata wood rush cold hardy?

Yes — marginata wood rush is genuinely cold hardy. Rated RHS H7 and USDA 5-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Marginata Wood Rush is hardy across USDA 5-9; 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 marginata wood rush can survive?

Minimum survivable temperature is roughly below about −20 °C. Marginata Wood Rush is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is marginata wood rush?

Marginata Wood Rush is rated USDA 5-9 and RHS H7 — Hardy in the severest European continental winters.

Can marginata wood rush survive winter outside?

Plant it out within USDA 5-9 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 marginata wood rush 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.