Cold hardiness & minimum temperature

Is Nymphaea 'Marliacea Carnea' (Nymphaea 'Marliacea Carnea')cold hardy? Hardiness zone & min temp

Also called Flesh-Pink Marliac Waterlily.

More about nymphaea 'marliacea carnea'

About Nymphaea 'Marliacea Carnea'

Nymphaea 'Marliacea Carnea' · also called Flesh-Pink Marliac Waterlily · flowering

Nymphaea 'Marliacea Carnea' is a vigorous, dependable hardy waterlily with soft flesh-pink, star-shaped blooms that are palest at the tips and fragrant. Young pads emerge purplish before greening. Widely grown and forgiving, it suits medium to large ponds. Needs full sun, still water 30-75 cm deep, and a heavy loam basket.

Cold limit: USDA 3-11 (hardy waterlily; rootstock overwinters below ice) · RHS H5 (15-30°C)

What nymphaea 'marliacea carnea''s hardiness rating actually means

Yes — nymphaea 'marliacea carnea' is genuinely cold hardy. Rated RHS H5 and USDA 3-11 (hardy waterlily; rootstock overwinters below ice), it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H5 means: Hardy in most of the UK and in cold winters. On the US scale that maps to USDA 3-11 (hardy waterlily; rootstock overwinters below ice) — 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 −15 to −10 °C. Nymphaea 'Marliacea Carnea' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for nymphaea 'marliacea carnea' as it gets too cold:

It tolerates winter lows to about −15 to −10 °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 nymphaea 'marliacea carnea' go outside or overwinter — and where?

Plant it out within USDA 3-11 (hardy waterlily; rootstock overwinters below ice) 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 nymphaea 'marliacea carnea' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Nymphaea 'Marliacea Carnea' hardiness — frequently asked questions

Is nymphaea 'marliacea carnea' cold hardy?

Yes — nymphaea 'marliacea carnea' is genuinely cold hardy. Rated RHS H5 and USDA 3-11 (hardy waterlily; rootstock overwinters below ice), it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Nymphaea 'Marliacea Carnea' is hardy across USDA 3-11 (hardy waterlily; rootstock overwinters below ice); 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 nymphaea 'marliacea carnea' can survive?

Minimum survivable temperature is roughly about −15 to −10 °C. Nymphaea 'Marliacea Carnea' is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is nymphaea 'marliacea carnea'?

Nymphaea 'Marliacea Carnea' is rated USDA 3-11 (hardy waterlily; rootstock overwinters below ice) and RHS H5 — Hardy in most of the UK and in cold winters.

Can nymphaea 'marliacea carnea' survive winter outside?

Plant it out within USDA 3-11 (hardy waterlily; rootstock overwinters below ice) 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 nymphaea 'marliacea carnea' below its minimum temperature?

It tolerates winter lows to about −15 to −10 °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.