Cold hardiness & minimum temperature

Is Pelargonium 'Madame Layal' (Pelargonium 'Madame Layal')cold hardy? Hardiness zone & min temp

Also called Angel pelargonium Madame Layal, Pansy-faced pelargonium.

More about pelargonium 'madame layal'

About Pelargonium 'Madame Layal'

Pelargonium 'Madame Layal' · also called Angel pelargonium Madame Layal, Pansy-faced pelargonium · flowering

Pelargonium 'Madame Layal' is a dainty angel pelargonium with charming pansy-like, bicoloured flowers: upper petals deep maroon-purple and lower petals soft mauve-lilac edged white. Compact and bushy with small, lightly aromatic leaves, it flowers freely all summer. An old French cultivar, it makes an excellent windowsill, patio, or conservatory plant in bright light and free-draining, never-soggy compost.

Cold limit: USDA 9-11 (overwinter frost-free elsewhere) · RHS H2 (10-24°C)

Watch for — Black leg: Rotting, blackened stem bases from cold, wet compost or overwatering, common in cuttings. Use gritty mix and water only when the surface dries.

What pelargonium 'madame layal''s hardiness rating actually means

Pelargonium 'Madame Layal' 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 9-11 (overwinter frost-free elsewhere) — 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. Pelargonium 'Madame Layal' shrugs off cold nights but a real, sustained freeze will kill it.

Concretely, for pelargonium 'madame layal' 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 pelargonium 'madame layal' go outside or overwinter — and where?

It can live outside year-round only in the mildest, most sheltered part of USDA 9-11 (overwinter frost-free elsewhere) 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 pelargonium 'madame layal' 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 pelargonium 'madame layal'

Pelargonium 'Madame Layal' 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.

Pelargonium 'Madame Layal' hardiness — frequently asked questions

Is pelargonium 'madame layal' cold hardy?

Pelargonium 'Madame Layal' 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 9-11 (overwinter frost-free elsewhere) (and sheltered UK gardens) pelargonium 'madame layal' can stay out; in colder areas it must be lifted, brought in, or treated as a frost-tender plant.

What is the minimum temperature pelargonium 'madame layal' can survive?

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

What hardiness zone is pelargonium 'madame layal'?

Pelargonium 'Madame Layal' is rated USDA 9-11 (overwinter frost-free elsewhere) and RHS H2 — Tender — survives a frost-free greenhouse or a very mild, sheltered spot.

Can pelargonium 'madame layal' survive winter outside?

It can live outside year-round only in the mildest, most sheltered part of USDA 9-11 (overwinter frost-free elsewhere) 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 pelargonium 'madame layal' 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.