Cold hardiness & minimum temperature

Is Amish Paste Tomato (Solanum lycopersicum 'Amish Paste')cold hardy? Hardiness zone & min temp

Also called Amish Paste tomato, heirloom paste tomato.

More about amish paste tomato

About Amish Paste Tomato

Solanum lycopersicum 'Amish Paste' · also called Amish Paste tomato, heirloom paste tomato · edible

'Amish Paste' is an indeterminate heirloom plum/paste tomato bearing meaty, low-seed, oxheart-shaped red fruit prized for sauces, paste and canning. Vigorous and productive, it needs full sun, staking, and a long warm season. ASPCA lists the tomato plant as toxic to pets, although the fully ripe fruit itself is non-toxic.

Cold limit: USDA Grown as a warm-season annual; 2-11 (frost-tender, planted out after last frost) · RHS H2 (18-29°C)

Watch for — Catfacing and uneven fruit: Cool temperatures or stress during flowering cause distorted, scarred fruit. Plant out only once nights are reliably warm and feed evenly.

What amish paste tomato's hardiness rating actually means

Amish Paste Tomato is half-hardy (RHS H2). 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 H2 means: Tender — survives a frost-free greenhouse or a very mild, sheltered spot. On the US scale that maps to USDA Grown as a warm-season annual; 2-11 (frost-tender, planted out after last frost) — 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 1 to 5 °C — tolerates cold but no real frost. Amish Paste Tomato shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for amish paste tomato as it gets too cold:

Down to roughly about 1 to 5 °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 amish paste tomato go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA Grown as a warm-season annual; 2-11 (frost-tender, planted out after last frost) 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 amish paste tomato can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H2 figure above.

Frost protection for borderline amish paste tomato

Amish Paste Tomato 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.

Amish Paste Tomato hardiness — frequently asked questions

Is amish paste tomato cold hardy?

Amish Paste Tomato is half-hardy (RHS H2). 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 Grown as a warm-season annual; 2-11 (frost-tender, planted out after last frost) (and sheltered UK gardens) amish paste tomato can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature amish paste tomato can survive?

Minimum survivable temperature is roughly about 1 to 5 °C — tolerates cold but no real frost. Amish Paste Tomato shrugs off cold nights but a real, sustained freeze will kill it.

What hardiness zone is amish paste tomato?

Amish Paste Tomato is rated USDA Grown as a warm-season annual; 2-11 (frost-tender, planted out after last frost) and RHS H2 — Tender — survives a frost-free greenhouse or a very mild, sheltered spot.

Can amish paste tomato survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA Grown as a warm-season annual; 2-11 (frost-tender, planted out after last frost) 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 amish paste tomato 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.