Cold hardiness & minimum temperature

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

Also called Pineapple tomato, yellow-orange heirloom tomato.

More about pineapple tomato

About Pineapple Tomato

Solanum lycopersicum 'Pineapple' · also called Pineapple tomato, yellow-orange heirloom tomato · edible

Pineapple is a large bicolour beefsteak heirloom with yellow-orange skin streaked red, sweet low-acid flesh and fruit often over 450 g. It is an indeterminate, late-maturing vine needing strong support, full sun and a long warm season. Like all tomatoes, the foliage and unripe fruit are toxic to pets.

Cold limit: USDA Grown as a warm-season annual in all zones; needs a long frost-free season · RHS H1c (18-29°C)

Watch for — Late ripening: Big bicolour fruit matures slowly; in short seasons start early indoors and limit trusses so set fruit can finish before frost.

What pineapple tomato's hardiness rating actually means

Pineapple Tomato is a tender fruiting plant, not a hardy one. It crops outdoors only in roughly USDA Grown as a warm-season annual in all zones; needs a long frost-free season; in cooler zones it is a container plant moved under cover for winter. Its RHS rating of H1c means: Warm-temperate — can summer outdoors but must come in well before the first frost. On the US scale that maps to USDA Grown as a warm-season annual in all zones; needs a long frost-free season — 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 °C (and never frost). Pineapple Tomato fruits in warmth and is set back or killed by frost.

Concretely, for pineapple tomato as it gets too cold:

Below about 5 °C the foliage and any fruit are damaged; a hard frost can kill the whole plant.
A light frost typically scorches leaves and ruins the current crop even when the framework survives.
Roots in a container freeze far faster than roots in the ground, so potted specimens need earlier protection.

Can pineapple tomato go outside or overwinter — and where?

It can stay outdoors year-round only in USDA Grown as a warm-season annual in all zones; needs a long frost-free season; in a UK or cold-US climate it is a conservatory or move-it-indoors plant for winter.
Summer it outside in full sun for the best crop, then bring it into a cool, bright, frost-free room before the first frost.
A bright unheated (but frost-free) glasshouse or porch is the ideal overwintering spot — cool and dormant, never freezing.

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 pineapple tomato can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1c figure above.

Frost protection for borderline pineapple tomato

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

Move containers into a frost-free glasshouse, porch or cool room before the first forecast frost.
For borderline-zone ground plants, wrap the trunk and fleece the canopy, and mulch the root zone heavily.
Keep it on the dry side over winter — cold plus wet roots is what actually kills tender fruit.

Pineapple Tomato hardiness — frequently asked questions

Is pineapple tomato cold hardy?

Pineapple Tomato is a tender fruiting plant, not a hardy one. It crops outdoors only in roughly USDA Grown as a warm-season annual in all zones; needs a long frost-free season; in cooler zones it is a container plant moved under cover for winter. Frost-tender. Grow pineapple tomato in the ground only within USDA Grown as a warm-season annual in all zones; needs a long frost-free season; everywhere colder it lives in a large pot that comes into a frost-free space each winter.

What is the minimum temperature pineapple tomato can survive?

Minimum survivable temperature is roughly about 5 °C (and never frost). Pineapple Tomato fruits in warmth and is set back or killed by frost.

What hardiness zone is pineapple tomato?

Pineapple Tomato is rated USDA Grown as a warm-season annual in all zones; needs a long frost-free season and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can pineapple tomato survive winter outside?

It can stay outdoors year-round only in USDA Grown as a warm-season annual in all zones; needs a long frost-free season; in a UK or cold-US climate it is a conservatory or move-it-indoors plant for winter. Summer it outside in full sun for the best crop, then bring it into a cool, bright, frost-free room before the first frost. A bright unheated (but frost-free) glasshouse or porch is the ideal overwintering spot — cool and dormant, never freezing.

How do I protect pineapple tomato from frost?

Move containers into a frost-free glasshouse, porch or cool room before the first forecast frost. For borderline-zone ground plants, wrap the trunk and fleece the canopy, and mulch the root zone heavily. Keep it on the dry side over winter — cold plus wet roots is what actually kills tender fruit.