Cold hardiness & minimum temperature

Is Statice (Limonium sinuatum)cold hardy? Hardiness zone & min temp

Also called Statice, Wavyleaf sea lavender, Annual statice, Notchleaf marsh-rosemary.

More about statice

About Statice

Limonium sinuatum · also called Statice, Wavyleaf sea lavender · flowering

Limonium sinuatum is a short-lived perennial from the Mediterranean basin and North Africa, widely grown worldwide as a summer annual for its dense clusters of papery, funnel-shaped flowers in purple, pink, white, blue, or yellow that retain their colour when dried. It thrives in light, sandy, well-drained soil in full sun, reflecting its coastal and arid scrubland origins, and is notably salt-tolerant. In most UK and US gardens it is treated as a half-hardy annual, though it may overwinter in USDA zones 8–10. Limonium (including statice) is listed by the ASPCA as non-toxic to cats and dogs.

Cold limit: USDA 8-11 (grown as annual in zones 3-7) · RHS H3 (10°C to 30°C (growing season); frost-tender below 0°C)

What statice's hardiness rating actually means

Hardiness works differently for statice: it is grown as a seasonal crop, not overwintered. The question is not "what zone" but "how long is your frost-free growing window". Its RHS rating of H3 means: Half-hardy — comes through mild UK winters outside but is killed by a hard freeze. On the US scale that maps to USDA 8-11 (grown as annual in zones 3-7) — 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

As an annual crop, its "minimum temperature" is the first hard frost — that is the end of the plant's life, not a survivable low. Many types are also damaged by light frost (around 0 °C).

Concretely, for statice as it gets too cold:

Light frost (around 0 to −2 °C) damages or kills tender summer crops outright; cold-hardy types take a few degrees of frost.
The plant does not "survive winter" — its life cycle simply ends, by design, when frost arrives or it finishes cropping.
A surprise late spring frost can also kill young transplants set out too early, before the season even starts.

Can statice go outside or overwinter — and where?

Time it to your frost dates: sow or plant out after the last spring frost, and aim to harvest before the first autumn frost.
In short-season zones, start it indoors or under cover to stretch the effective growing window.
Hardier crops in this group can be sown for an autumn or overwintered harvest in mild zones — check the specific crop.

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 statice can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H3 figure above.

Frost protection for borderline statice

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

Use fleece, cloches or a cold frame at each end of the season to dodge a borderline frost and add growing weeks.
Have row cover ready for an unexpected late spring or early autumn frost.
Know your local last- and first-frost dates and count back the crop’s days-to-maturity to schedule the sowing.

Statice hardiness — frequently asked questions

Is statice cold hardy?

Hardiness works differently for statice: it is grown as a seasonal crop, not overwintered. The question is not "what zone" but "how long is your frost-free growing window". A seasonal crop, not a perennial. Statice is grown 8-11 (grown as annual in zones 3-7); you sow after the last frost and harvest before the first one, then start again next year.

What is the minimum temperature statice can survive?

As an annual crop, its "minimum temperature" is the first hard frost — that is the end of the plant's life, not a survivable low. Many types are also damaged by light frost (around 0 °C).

What hardiness zone is statice?

Statice is rated USDA 8-11 (grown as annual in zones 3-7) and RHS H3 — Half-hardy — comes through mild UK winters outside but is killed by a hard freeze.

Can statice survive winter outside?

Time it to your frost dates: sow or plant out after the last spring frost, and aim to harvest before the first autumn frost. In short-season zones, start it indoors or under cover to stretch the effective growing window. Hardier crops in this group can be sown for an autumn or overwintered harvest in mild zones — check the specific crop.

How do I protect statice from frost?

Use fleece, cloches or a cold frame at each end of the season to dodge a borderline frost and add growing weeks. Have row cover ready for an unexpected late spring or early autumn frost. Know your local last- and first-frost dates and count back the crop’s days-to-maturity to schedule the sowing.