Cold hardiness & minimum temperature

Is Mayapple (Podophyllum peltatum)cold hardy? Hardiness zone & min temp

Also called Mayapple, American Mandrake, Wild Mandrake, Umbrella Plant, Hog Apple.

More about mayapple

About Mayapple

Podophyllum peltatum · also called Mayapple, American Mandrake · flowering

Mayapple is a bold, colony-forming North American woodland perennial with large, deeply lobed umbrella-like leaves. Single white flowers emerge in spring beneath the leaf canopy, followed by yellow egg-shaped fruits. Despite edible ripe fruit, all other parts are highly toxic. Outstanding for large-scale woodland naturalising and shade gardens.

Cold limit: USDA 3–8 · RHS H7 (-15–25°C)

What mayapple's hardiness rating actually means

Yes — mayapple 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. Mayapple is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for mayapple 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 mayapple 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 mayapple can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Mayapple hardiness — frequently asked questions

Is mayapple cold hardy?

Yes — mayapple 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. Mayapple 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 mayapple can survive?

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

What hardiness zone is mayapple?

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

Can mayapple 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 mayapple 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.