Cold hardiness & minimum temperature

Is Butia Yatay (Butia yatay)cold hardy? Hardiness zone & min temp

Also called yatay palm, wine palm, South American wine palm.

More about butia yatay

About Butia Yatay

Butia yatay · also called yatay palm, wine palm · tropical

The yatay palm is a tall South American feather palm from Argentina, Uruguay and southern Brazil, with a stout trunk and a fountain of strongly arching, blue-green fronds. Hardy and drought-tolerant, it bears edible orange jelly-like fruits used for preserves and wine. It thrives in full sun, sandy free-draining soil and warm summers.

Cold limit: USDA 9a-11 (hardy outdoors in mild US/UK areas; tolerates light frost) · RHS H3 (15-30°C)

Watch for — Cold injury: Hardy to light frost but damaged by hard freezes, which brown fronds and can kill the crown. Protect in severe cold.

What butia yatay's hardiness rating actually means

Butia Yatay 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 9a-11 (hardy outdoors in mild US/UK areas; tolerates light 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 −5 to 1 °C — a light, short frost only. Butia Yatay shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for butia yatay 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 butia yatay go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA 9a-11 (hardy outdoors in mild US/UK areas; tolerates light 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 butia yatay 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 butia yatay

Butia Yatay 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.

Butia Yatay hardiness — frequently asked questions

Is butia yatay cold hardy?

Butia Yatay 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 9a-11 (hardy outdoors in mild US/UK areas; tolerates light frost) (and sheltered UK gardens) butia yatay can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature butia yatay can survive?

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

What hardiness zone is butia yatay?

Butia Yatay is rated USDA 9a-11 (hardy outdoors in mild US/UK areas; tolerates light frost) and RHS H3 — Half-hardy — comes through mild UK winters outside but is killed by a hard freeze.

Can butia yatay survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA 9a-11 (hardy outdoors in mild US/UK areas; tolerates light 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 butia yatay 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.