Cold hardiness & minimum temperature

Is Elephant's Foot Pachypodium (Pachypodium rosulatum)cold hardy? Hardiness zone & min temp

Also called Elephant's Foot, Rose Pachypodium.

More about elephant's foot pachypodium

About Elephant's Foot Pachypodium

Pachypodium rosulatum · also called Elephant's Foot, Rose Pachypodium · houseplant

Elephant's Foot Pachypodium is a compact Malagasy caudiciform succulent with a swollen, bottle-shaped base, branching spiny stems, and shiny leaves. It produces bright yellow flowers in cultivation. Toxic to pets and people due to alkaloid compounds in the Apocynaceae family; keep away from animals.

Cold limit: USDA 10-12 · RHS H1c (15-30°C in growth; minimum 10-12°C in winter)

Watch for — Caudex rot: Typically caused by overwatering in winter or inadequate drainage. Keep almost completely dry in winter and ensure excellent drainage.

What elephant's foot pachypodium's hardiness rating actually means

Elephant's Foot Pachypodium is not cold hardy. It is a tropical houseplant that dies if it is left out through frost — there is no zone where it overwinters outdoors in a UK or cold-US climate. 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 10-12 — 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). Elephant's Foot Pachypodium has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for elephant's foot pachypodium as it gets too cold:

Below about about 5 °C, growth stalls and the leaves start to show cold stress — dark, water-soaked, or yellowing patches.
A single light frost blackens the foliage; a hard freeze kills the whole plant, roots included, and it does not recover.
Even a cold, draughty windowsill or an unheated porch in winter can be enough to damage it permanently.

Can elephant's foot pachypodium go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above 5 °C, in shade or dappled light, hardened off gradually.
Bring it back indoors well before the first autumn frost — do not wait for a frost warning, move it when nights drop toward 10-12 °C.
It will never overwinter outside in a temperate climate; the indoors is its winter home, full stop.

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 elephant's foot pachypodium can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1c figure above.

Elephant's Foot Pachypodium hardiness — frequently asked questions

Is elephant's foot pachypodium cold hardy?

Elephant's Foot Pachypodium is not cold hardy. It is a tropical houseplant that dies if it is left out through frost — there is no zone where it overwinters outdoors in a UK or cold-US climate. Indoor-only in almost every home. Elephant's Foot Pachypodium can only live outside year-round in genuinely frost-free climates (roughly USDA 10-12); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature elephant's foot pachypodium can survive?

Minimum survivable temperature is roughly about 5 °C (and never frost). Elephant's Foot Pachypodium has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

What hardiness zone is elephant's foot pachypodium?

Elephant's Foot Pachypodium is rated USDA 10-12 and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can elephant's foot pachypodium survive winter outside?

It can holiday outdoors in summer once nights are reliably above 5 °C, in shade or dappled light, hardened off gradually. Bring it back indoors well before the first autumn frost — do not wait for a frost warning, move it when nights drop toward 10-12 °C. It will never overwinter outside in a temperate climate; the indoors is its winter home, full stop.

What happens to elephant's foot pachypodium below its minimum temperature?

Below about about 5 °C, growth stalls and the leaves start to show cold stress — dark, water-soaked, or yellowing patches. A single light frost blackens the foliage; a hard freeze kills the whole plant, roots included, and it does not recover. Even a cold, draughty windowsill or an unheated porch in winter can be enough to damage it permanently.