Cold hardiness & minimum temperature

Is Canadian Yew (Taxus canadensis)cold hardy? Hardiness zone & min temp

Also called Canadian Yew, American Yew, Ground Hemlock.

More about canadian yew

About Canadian Yew

Taxus canadensis · also called Canadian Yew, American Yew · flowering

Canadian Yew is a low, spreading, shade-tolerant evergreen shrub native to the understorey of forests across eastern Canada and the northeastern United States. One of the hardiest yews, it naturally forms thickets in deep shade and moist woodland soil. Its bright red arils ripen in late summer and are attractive to birds, but all other parts are severely toxic to people and animals.

Cold limit: USDA 2-6 · RHS H7 (-40°C to 25°C)

Watch for — Winter sun scald: In exposed, sunny winter sites, foliage can brown and desiccate due to transpiration when roots are frozen. Site in shade or semi-shade; apply anti-desiccant spray in late autumn; avoid south-facing exposed positions in cold regions.

What canadian yew's hardiness rating actually means

Yes — canadian yew is genuinely cold hardy. Rated RHS H7 and USDA 2-6, 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 2-6 — 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. Canadian Yew is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for canadian yew 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 canadian yew go outside or overwinter — and where?

Plant it out within USDA 2-6 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 canadian yew can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Canadian Yew hardiness — frequently asked questions

Is canadian yew cold hardy?

Yes — canadian yew is genuinely cold hardy. Rated RHS H7 and USDA 2-6, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Canadian Yew is hardy across USDA 2-6; 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 canadian yew can survive?

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

What hardiness zone is canadian yew?

Canadian Yew is rated USDA 2-6 and RHS H7 — Hardy in the severest European continental winters.

Can canadian yew survive winter outside?

Plant it out within USDA 2-6 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 canadian yew 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.