Cold hardiness & minimum temperature

Is Pilea cadierei 'Silver Tree' (Pilea cadierei 'Silver Tree')cold hardy? Hardiness zone & min temp

Also called silver tree pilea, aluminium silver tree.

More about pilea cadierei 'silver tree'

About Pilea cadierei 'Silver Tree'

Pilea cadierei 'Silver Tree' · also called silver tree pilea, aluminium silver tree · houseplant

A striking pilea with quilted, dark bronze-green leaves marked by a silver central stripe and matching silvery blisters, giving a metallic sheen. Bushier and more upright than trailing peperomias, it likes consistent moisture and warmth. As a non-succulent Pilea it dislikes drying out fully but still needs airy, well-drained soil to avoid rot.

Cold limit: USDA 11-12 (indoor in most US homes) · RHS H1b (18-27°C)

What pilea cadierei 'silver tree''s hardiness rating actually means

Pilea cadierei 'Silver Tree' 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 H1b means: Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season. On the US scale that maps to USDA 11-12 (indoor in most US homes) — 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 10 °C (sustained cold below this is damaging). Pilea cadierei 'Silver Tree' has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for pilea cadierei 'silver tree' as it gets too cold:

Below about about 10 °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 pilea cadierei 'silver tree' go outside or overwinter — and where?

It can holiday outdoors in summer once nights are reliably above 10 °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 pilea cadierei 'silver tree' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Pilea cadierei 'Silver Tree' hardiness — frequently asked questions

Is pilea cadierei 'silver tree' cold hardy?

Pilea cadierei 'Silver Tree' 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. Pilea cadierei 'Silver Tree' can only live outside year-round in genuinely frost-free climates (roughly USDA 11-12 (indoor in most US homes)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature pilea cadierei 'silver tree' can survive?

What hardiness zone is pilea cadierei 'silver tree'?

Pilea cadierei 'Silver Tree' is rated USDA 11-12 (indoor in most US homes) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can pilea cadierei 'silver tree' survive winter outside?

It can holiday outdoors in summer once nights are reliably above 10 °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 pilea cadierei 'silver tree' below its minimum temperature?

Below about about 10 °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.