Cold hardiness & minimum temperature

Is Spanish jasmine (Jasminum grandiflorum)cold hardy? Hardiness zone & min temp

Also called Spanish jasmine, Royal jasmine, Catalonian jasmine, Italian jasmine.

More about spanish jasmine

About Spanish jasmine

Jasminum grandiflorum · also called Spanish jasmine, Royal jasmine · herb

Spanish jasmine is the species behind commercial jasmine essential oil and widely used in perfumery and herbal traditions. A semi-climbing or scrambling shrub from the western Himalayas, it bears clusters of intensely fragrant, large white flowers from summer into autumn. Easy to grow in warm temperate gardens, it thrives in full sun with good drainage and moderate pruning.

Cold limit: USDA 8-11 · RHS H3 (5–30°C)

Watch for — Frost damage to stems: In USDA Zone 8 or RHS H3 climates, hard frosts can kill stems to the ground. Mulch the root zone and wrap stems with horticultural fleece in winter; plants typically regenerate from the base in spring.

What spanish jasmine's hardiness rating actually means

Spanish jasmine is half-hardy (RHS H3). It survives a mild winter outdoors in a sheltered spot, but a hard frost kills it — so in colder zones it is lifted, potted, or grown as a tender plant. 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 — 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 −5 to 1 °C — a light, short frost only. Spanish jasmine shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for spanish jasmine as it gets too cold:

Down to roughly about −5 to 1 °C it copes, especially if dry and sheltered.
A sustained hard frost collapses the top growth; whether it returns depends on whether the roots, crown or tubers froze.
Wet cold is far more lethal than dry cold for this plant — soggy, frozen soil is the usual killer.

Can spanish jasmine go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA 8-11 or a frost-free UK microclimate.
In colder zones, grow it in a pot you can move under cover, or lift its tubers/roots and store them frost-free over winter.
A south-facing wall, free-draining soil and a dry winter position can push it a full zone hardier than the books suggest.

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 spanish jasmine 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 spanish jasmine

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

Mulch the crown or root zone deeply with bark, straw or leaf-mould before the first hard frost.
Move container plants against a warm wall or into an unheated but frost-free porch or greenhouse.
Fleece the top growth on the coldest nights, and keep it on the dry side — dry roots survive cold far better than wet ones.
Lift dahlia-type tubers or tender crowns after the first light frost blackens the foliage and store them somewhere cool but frost-free.

Spanish jasmine hardiness — frequently asked questions

Is spanish jasmine cold hardy?

Spanish jasmine is half-hardy (RHS H3). It survives a mild winter outdoors in a sheltered spot, but a hard frost kills it — so in colder zones it is lifted, potted, or grown as a tender plant. Borderline outdoors. In its mild end of USDA 8-11 (and sheltered UK gardens) spanish jasmine can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature spanish jasmine can survive?

Minimum survivable temperature is roughly about −5 to 1 °C — a light, short frost only. Spanish jasmine shrugs off cold nights but a real, sustained freeze will kill it.

What hardiness zone is spanish jasmine?

Spanish jasmine is rated USDA 8-11 and RHS H3 — Half-hardy — comes through mild UK winters outside but is killed by a hard freeze.

Can spanish jasmine survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA 8-11 or a frost-free UK microclimate. In colder zones, grow it in a pot you can move under cover, or lift its tubers/roots and store them frost-free over winter. A south-facing wall, free-draining soil and a dry winter position can push it a full zone hardier than the books suggest.

How do I protect spanish jasmine from frost?

Mulch the crown or root zone deeply with bark, straw or leaf-mould before the first hard frost. Move container plants against a warm wall or into an unheated but frost-free porch or greenhouse. Fleece the top growth on the coldest nights, and keep it on the dry side — dry roots survive cold far better than wet ones. Lift dahlia-type tubers or tender crowns after the first light frost blackens the foliage and store them somewhere cool but frost-free.