Cold hardiness & minimum temperature

Is Apennine Windflower (Anemone apennina)cold hardy? Hardiness zone & min temp

Also called Apennine Windflower, Blue Windflower, Italian Windflower.

More about apennine windflower

About Apennine Windflower

Anemone apennina · also called Apennine Windflower, Blue Windflower · flowering

Anemone apennina is a dainty spring-flowering woodland perennial from the Apennine Mountains, producing clear sky-blue to violet daisy-like flowers with yellow centres above delicate, deeply divided foliage. It spreads slowly to form charming colonies under deciduous trees. Toxic to pets; all parts contain irritant compounds typical of the Ranunculaceae family.

Cold limit: USDA 5-9 · RHS H5 (3-20°C)

Watch for — Vine weevil: Larvae can feed on rhizomes over winter. Use biological nematode controls in late summer or autumn as a preventative measure.

What apennine windflower's hardiness rating actually means

Yes — apennine windflower is genuinely cold hardy. Rated RHS H5 and USDA 5-9, 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 5-9 — 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 −15 to −10 °C. Apennine Windflower is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for apennine windflower 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 apennine windflower go outside or overwinter — and where?

Plant it out within USDA 5-9 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 apennine windflower can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H5 figure above.

Apennine Windflower hardiness — frequently asked questions

Is apennine windflower cold hardy?

Yes — apennine windflower is genuinely cold hardy. Rated RHS H5 and USDA 5-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Apennine Windflower is hardy across USDA 5-9; 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 apennine windflower can survive?

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

What hardiness zone is apennine windflower?

Apennine Windflower is rated USDA 5-9 and RHS H5 — Hardy in most of the UK and in cold winters.

Can apennine windflower survive winter outside?

Plant it out within USDA 5-9 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 apennine windflower 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.