Cold hardiness & minimum temperature

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

Also called Twinny Peach Snapdragon, Double Peach Snapdragon.

More about antirrhinum majus 'twinny peach'

About Antirrhinum majus 'Twinny Peach'

Antirrhinum majus 'Twinny Peach' · also called Twinny Peach Snapdragon, Double Peach Snapdragon · flowering

A dwarf, double-flowered snapdragon and All-America Selections winner, 'Twinny Peach' bears soft peach, apricot, and cream open-faced double blooms on compact, well-branched plants. Bred for heat tolerance and tidy bedding, it suits borders, containers, and the front of beds. It flowers prolifically in cool-to-mild weather and needs no staking.

Cold limit: USDA 7-11 (perennial in mild zones; widely grown as a cool-season annual) · RHS H3 (10-26°C)

Watch for — Heat-induced flowering pause: Blooming slows in extreme heat despite good tolerance. Deadhead spent spikes and keep watering; flowering resumes as temperatures moderate.

What antirrhinum majus 'twinny peach''s hardiness rating actually means

Hardiness works differently for antirrhinum majus 'twinny peach': 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 7-11 (perennial in mild zones; widely grown as a cool-season annual) — 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 antirrhinum majus 'twinny peach' 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 antirrhinum majus 'twinny peach' 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 antirrhinum majus 'twinny peach' 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 antirrhinum majus 'twinny peach'

Antirrhinum majus 'Twinny Peach' 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.

Antirrhinum majus 'Twinny Peach' hardiness — frequently asked questions

Is antirrhinum majus 'twinny peach' cold hardy?

Hardiness works differently for antirrhinum majus 'twinny peach': 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. Antirrhinum majus 'Twinny Peach' is grown 7-11 (perennial in mild zones; widely grown as a cool-season annual); you sow after the last frost and harvest before the first one, then start again next year.

What is the minimum temperature antirrhinum majus 'twinny peach' 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 antirrhinum majus 'twinny peach'?

Antirrhinum majus 'Twinny Peach' is rated USDA 7-11 (perennial in mild zones; widely grown as a cool-season annual) and RHS H3 — Half-hardy — comes through mild UK winters outside but is killed by a hard freeze.

Can antirrhinum majus 'twinny peach' 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 antirrhinum majus 'twinny peach' 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.