Cold hardiness & minimum temperature

Is Achillea millefolium 'Cerise Queen' (Achillea millefolium 'Cerise Queen')cold hardy? Hardiness zone & min temp

Also called Cerise Queen yarrow.

More about achillea millefolium 'cerise queen'

About Achillea millefolium 'Cerise Queen'

Achillea millefolium 'Cerise Queen' · also called Cerise Queen yarrow · flowering

A vivid common-yarrow selection bearing flat heads of cerise-pink flowers with pale centers above ferny, aromatic green foliage all summer. 'Cerise Queen' is tough, drought-tolerant, and pollinator-friendly, spreading readily to fill sunny borders and wildflower plantings. Flowers fade with age, giving a multi-toned look, and dry well for arrangements.

Cold limit: USDA 3-9 · RHS H7 (-34 to 32°C)

What achillea millefolium 'cerise queen''s hardiness rating actually means

Yes — achillea millefolium 'cerise queen' is genuinely cold hardy. Rated RHS H7 and USDA 3-9, 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 3-9 — 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 below about −20 °C. Achillea millefolium 'Cerise Queen' is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for achillea millefolium 'cerise queen' 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 achillea millefolium 'cerise queen' go outside or overwinter — and where?

Plant it out within USDA 3-9 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 achillea millefolium 'cerise queen' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H7 figure above.

Achillea millefolium 'Cerise Queen' hardiness — frequently asked questions

Is achillea millefolium 'cerise queen' cold hardy?

Yes — achillea millefolium 'cerise queen' is genuinely cold hardy. Rated RHS H7 and USDA 3-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Achillea millefolium 'Cerise Queen' is hardy across USDA 3-9; 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 achillea millefolium 'cerise queen' can survive?

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

What hardiness zone is achillea millefolium 'cerise queen'?

Achillea millefolium 'Cerise Queen' is rated USDA 3-9 and RHS H7 — Hardy in the severest European continental winters.

Can achillea millefolium 'cerise queen' survive winter outside?

Plant it out within USDA 3-9 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.

What happens to achillea millefolium 'cerise queen' 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.