Cold hardiness & minimum temperature

Is Alpine Totara (Podocarpus nivalis)cold hardy? Hardiness zone & min temp

Also called alpine totara, snow totara.

More about alpine totara

About Alpine Totara

Podocarpus nivalis · also called alpine totara, snow totara · flowering

A tough, low-spreading alpine conifer from New Zealand's mountains, with small, leathery olive-green to bronze needles on wiry branches. Cold- and wind-hardy, it forms a dense evergreen mat ideal for rock gardens and ground cover. Female plants bear fleshy red arils. A slow, resilient shrub for exposed, well-drained sites.

Cold limit: USDA 7-9 · RHS H6 (-20 to 25°C)

Watch for — Excess shade: Too little sun makes growth open and floppy and dulls the bronze winter colour; site in full sun.

What alpine totara's hardiness rating actually means

Yes — alpine totara is genuinely cold hardy. Rated RHS H6 and USDA 7-9, it lives outdoors all year and needs winter cold rather than protection from it. Its RHS rating of H6 means: Hardy throughout the UK and northern Europe. On the US scale that maps to USDA 7-9 — 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 about −20 to −15 °C. Alpine Totara is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for alpine totara as it gets too cold:

It tolerates winter lows to about −20 to −15 °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 alpine totara go outside or overwinter — and where?

Plant it out within USDA 7-9 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 alpine totara can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Frost protection for borderline alpine totara

Alpine Totara is right on a hardiness edge in many gardens, so if you are pushing it, these measures buy it the margin it needs:

At the cold edge of its range, mulch the root zone in late autumn to buffer the deepest freezes.
Protect container specimens — pots freeze through far faster than open ground, costing roughly a zone of hardiness.
Shelter new growth from late spring frosts with fleece if a hard night is forecast.

Alpine Totara hardiness — frequently asked questions

Is alpine totara cold hardy?

Yes — alpine totara is genuinely cold hardy. Rated RHS H6 and USDA 7-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Alpine Totara is hardy across USDA 7-9; 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 alpine totara can survive?

Minimum survivable temperature is roughly about −20 to −15 °C. Alpine Totara is built for winter — once established it takes hard frost and snow in its stride.

What hardiness zone is alpine totara?

Alpine Totara is rated USDA 7-9 and RHS H6 — Hardy throughout the UK and northern Europe.

Can alpine totara survive winter outside?

Plant it out within USDA 7-9 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.

How do I protect alpine totara from frost?

At the cold edge of its range, mulch the root zone in late autumn to buffer the deepest freezes. Protect container specimens — pots freeze through far faster than open ground, costing roughly a zone of hardiness. Shelter new growth from late spring frosts with fleece if a hard night is forecast.