Cold hardiness & minimum temperature

Is Crossandra infundibuliformis 'Mango' (Crossandra infundibuliformis 'Mango')cold hardy? Hardiness zone & min temp

Also called Mango firecracker flower, Orange crossandra.

More about crossandra infundibuliformis 'mango'

About Crossandra infundibuliformis 'Mango'

Crossandra infundibuliformis 'Mango' · also called Mango firecracker flower, Orange crossandra · tropical

Crossandra infundibuliformis 'Mango' is a compact tropical cultivar of the firecracker flower, prized for its long succession of fan-shaped, mango-orange blooms set against glossy dark green foliage. Native parent stock comes from southern India and Sri Lanka. It flowers almost year-round in warmth and makes an excellent pot, bedding, or conservatory plant.

Cold limit: USDA 10-11 (tender; grown as a houseplant or annual in cooler zones) · RHS H1b (18-29°C)

Watch for — Bud and flower drop: Triggered by drying out, cold draughts, or sudden moves. Keep moisture and temperature steady and avoid relocating it while budding.

What crossandra infundibuliformis 'mango''s hardiness rating actually means

Crossandra infundibuliformis 'Mango' 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 10-11 (tender; grown as a houseplant or annual in cooler zones) — 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). Crossandra infundibuliformis 'Mango' has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for crossandra infundibuliformis 'mango' 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 crossandra infundibuliformis 'mango' 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 crossandra infundibuliformis 'mango' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1b figure above.

Crossandra infundibuliformis 'Mango' hardiness — frequently asked questions

Is crossandra infundibuliformis 'mango' cold hardy?

Crossandra infundibuliformis 'Mango' 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. Crossandra infundibuliformis 'Mango' can only live outside year-round in genuinely frost-free climates (roughly USDA 10-11 (tender; grown as a houseplant or annual in cooler zones)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature crossandra infundibuliformis 'mango' can survive?

What hardiness zone is crossandra infundibuliformis 'mango'?

Crossandra infundibuliformis 'Mango' is rated USDA 10-11 (tender; grown as a houseplant or annual in cooler zones) and RHS H1b — Sub-tropical — a normal warm home is fine, but it cannot go outside in a cool season.

Can crossandra infundibuliformis 'mango' 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 crossandra infundibuliformis 'mango' 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.