Cold hardiness & minimum temperature

Is Ludwigia brevipes (Ludwigia brevipes)cold hardy? Hardiness zone & min temp

Also called short-stem Ludwigia, Long Beach primrose-willow.

More about ludwigia brevipes

About Ludwigia brevipes

Ludwigia brevipes · also called short-stem Ludwigia, Long Beach primrose-willow · tropical

Ludwigia brevipes is an easy, fast-growing red stem plant from the eastern USA with slender leaves that turn orange-pink to red under bright light. More forgiving than L. arcuata or glandulosa, it tolerates moderate light and needs no CO2 to thrive, making it a reliable, colourful filler for aquascapes and bog setups.

Cold limit: USDA 6-10 (native to eastern US coastal wetlands) · RHS H4 (18-28°C)

What ludwigia brevipes's hardiness rating actually means

Yes — ludwigia brevipes is genuinely cold hardy. Rated RHS H4 and USDA 6-10 (native to eastern US coastal wetlands), it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H4 means: Hardy in an average winter across much of the temperate world. On the US scale that maps to USDA 6-10 (native to eastern US coastal wetlands) — 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 −10 to −5 °C. Ludwigia brevipes is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for ludwigia brevipes as it gets too cold:

It tolerates winter lows to about −10 to −5 °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 ludwigia brevipes go outside or overwinter — and where?

Plant it out within USDA 6-10 (native to eastern US coastal wetlands) 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 ludwigia brevipes can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H4 figure above.

Ludwigia brevipes hardiness — frequently asked questions

Is ludwigia brevipes cold hardy?

Yes — ludwigia brevipes is genuinely cold hardy. Rated RHS H4 and USDA 6-10 (native to eastern US coastal wetlands), it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Ludwigia brevipes is hardy across USDA 6-10 (native to eastern US coastal wetlands); 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 ludwigia brevipes can survive?

Minimum survivable temperature is roughly about −10 to −5 °C. Ludwigia brevipes is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is ludwigia brevipes?

Ludwigia brevipes is rated USDA 6-10 (native to eastern US coastal wetlands) and RHS H4 — Hardy in an average winter across much of the temperate world.

Can ludwigia brevipes survive winter outside?

Plant it out within USDA 6-10 (native to eastern US coastal wetlands) 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 ludwigia brevipes below its minimum temperature?

It tolerates winter lows to about −10 to −5 °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.