Cold hardiness & minimum temperature

Is Hidcote Lavender (Lavandula angustifolia 'Hidcote')cold hardy? Hardiness zone & min temp

Also called Hidcote lavender, English lavender, True lavender.

More about hidcote lavender

About Hidcote Lavender

Lavandula angustifolia 'Hidcote' · also called Hidcote lavender, English lavender · herb

A compact, mound-forming cultivar of English lavender selected at Hidcote Manor in Gloucestershire, thriving in full sun and sharply drained, slightly alkaline soil. It is among the hardiest of all lavender cultivars, tolerating temperatures well below freezing, and produces intensely fragrant deep violet-purple flower spikes in early to midsummer. The single most important care rule is excellent drainage — standing moisture around the roots, especially in winter, is the primary killer. Lavender is toxic to cats, dogs, and horses according to the ASPCA.

Cold limit: USDA 5-9 · RHS H6 (-20°C to 35°C)

Watch for — Root rot (Phytophthora/Pythium): The leading cause of death; caused by waterlogged or poorly drained soil, especially in winter. Improve drainage with grit and avoid planting in clay hollows.

What hidcote lavender's hardiness rating actually means

Yes — hidcote lavender is genuinely cold hardy. Rated RHS H6 and USDA 5-9, 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 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 −20 to −15 °C. Hidcote Lavender is built for winter — once established it takes hard frost and snow in its stride.

Concretely, for hidcote lavender 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 hidcote lavender 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 hidcote lavender can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H6 figure above.

Hidcote Lavender hardiness — frequently asked questions

Is hidcote lavender cold hardy?

Yes — hidcote lavender is genuinely cold hardy. Rated RHS H6 and USDA 5-9, it lives outdoors all year and needs winter cold rather than protection from it. An outdoor plant. Hidcote Lavender 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 hidcote lavender can survive?

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

What hardiness zone is hidcote lavender?

Hidcote Lavender is rated USDA 5-9 and RHS H6 — Hardy throughout the UK and northern Europe.

Can hidcote lavender 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 hidcote lavender below its minimum temperature?

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.