Cold hardiness & minimum temperature

Is Martagon Lily (Lilium martagon)cold hardy? Hardiness zone & min temp

Also called Martagon Lily, Turk's Cap Lily, Common Turk's Cap.

More about martagon lily

About Martagon Lily

Lilium martagon · also called Martagon Lily, Turk's Cap Lily · flowering

Martagon Lily is a vigorous woodland species bearing up to 50 pendant, reflexed-petal flowers in pink-purple with dark spotting per stem. It excels in dappled shade and humus-rich soil, making it one of the few true lilies suited to shaded borders. Extremely toxic to cats; all parts cause acute kidney failure.

Cold limit: USDA 3–8 · RHS H7 (5–22°C)

What martagon lily's hardiness rating actually means

Yes — martagon lily is genuinely cold hardy. Rated RHS H7 and USDA 3–8, 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 3–8 — 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. Martagon Lily is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for martagon lily 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 martagon lily go outside or overwinter — and where?

Plant it out within USDA 3–8 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 martagon lily can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Martagon Lily hardiness — frequently asked questions

Is martagon lily cold hardy?

Yes — martagon lily is genuinely cold hardy. Rated RHS H7 and USDA 3–8, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Martagon Lily is hardy across USDA 3–8; 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 martagon lily can survive?

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

What hardiness zone is martagon lily?

Martagon Lily is rated USDA 3–8 and RHS H7 — Hardy in the severest European continental winters.

Can martagon lily survive winter outside?

Plant it out within USDA 3–8 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 martagon lily 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.