Cold hardiness & minimum temperature

Is Chantilly Peach snapdragon (Antirrhinum majus 'Chantilly Peach')cold hardy? Hardiness zone & min temp

Also called Chantilly Peach snapdragon, Butterfly snapdragon, Peach snapdragon.

More about chantilly peach snapdragon

About Chantilly Peach snapdragon

Antirrhinum majus 'Chantilly Peach' · also called Chantilly Peach snapdragon, Butterfly snapdragon · flowering

Chantilly Peach is an elegant tall snapdragon bearing open-faced, flaring blooms in soft peach flushed with apricot and rose, unlike the classic closed 'dragon mouth' flower. Growing 60–90 cm, it is superb for cutting gardens and cottage borders, attracting bees and butterflies. It thrives in cool weather and full sun with fertile, well-drained soil.

Cold limit: USDA 7-10 · RHS H3 (7–21°C)

What chantilly peach snapdragon's hardiness rating actually means

Chantilly Peach snapdragon 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 7-10 — 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. Chantilly Peach snapdragon shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for chantilly peach snapdragon 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 chantilly peach snapdragon go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA 7-10 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 chantilly peach snapdragon 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 chantilly peach snapdragon

Chantilly Peach snapdragon 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.

Chantilly Peach snapdragon hardiness — frequently asked questions

Is chantilly peach snapdragon cold hardy?

Chantilly Peach snapdragon 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 7-10 (and sheltered UK gardens) chantilly peach snapdragon can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature chantilly peach snapdragon can survive?

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

What hardiness zone is chantilly peach snapdragon?

Chantilly Peach snapdragon is rated USDA 7-10 and RHS H3 — Half-hardy — comes through mild UK winters outside but is killed by a hard freeze.

Can chantilly peach snapdragon survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA 7-10 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 chantilly peach snapdragon 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.