Cold hardiness & minimum temperature

Is Catharanthus roseus 'Cora Cascade Strawberry' (Catharanthus roseus 'Cora Cascade Strawberry')cold hardy? Hardiness zone & min temp

Also called Cora Cascade Strawberry Vinca, Trailing Strawberry Vinca.

More about catharanthus roseus 'cora cascade strawberry'

About Catharanthus roseus 'Cora Cascade Strawberry'

Catharanthus roseus 'Cora Cascade Strawberry' · also called Cora Cascade Strawberry Vinca, Trailing Strawberry Vinca · flowering

'Cora Cascade Strawberry' is a trailing annual vinca bred for disease resistance, spilling strawberry-rose blooms with a deeper eye from hanging baskets and containers all summer. Loving heat and full sun, it is highly drought-tolerant once established and flowers tirelessly without deadheading. Note: all parts contain vinca alkaloids and are toxic to pets if eaten.

Cold limit: USDA 10-11 (grown as a summer annual in cooler zones) · RHS H1c (20-32°C)

Watch for — Yellowing leaves: Often from chilly temperatures or overwatering. Wait for settled warmth before planting out and keep roots on the dry side.

What catharanthus roseus 'cora cascade strawberry''s hardiness rating actually means

Catharanthus roseus 'Cora Cascade Strawberry' 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 10-11 (grown as a summer 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 5 °C (and never frost). Catharanthus roseus 'Cora Cascade Strawberry' has no frost tolerance at all — it is an indoor plant in any climate with a real winter.

Concretely, for catharanthus roseus 'cora cascade strawberry' 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 catharanthus roseus 'cora cascade strawberry' 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 catharanthus roseus 'cora cascade strawberry' can be outside. US growers can check USDA zones; UK growers should use the RHS hardiness ratings, which match the H1c figure above.

Catharanthus roseus 'Cora Cascade Strawberry' hardiness — frequently asked questions

Is catharanthus roseus 'cora cascade strawberry' cold hardy?

Catharanthus roseus 'Cora Cascade Strawberry' 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. Catharanthus roseus 'Cora Cascade Strawberry' can only live outside year-round in genuinely frost-free climates (roughly USDA 10-11 (grown as a summer annual in cooler zones)); everywhere else it is a houseplant that summers out at most.

What is the minimum temperature catharanthus roseus 'cora cascade strawberry' can survive?

What hardiness zone is catharanthus roseus 'cora cascade strawberry'?

Catharanthus roseus 'Cora Cascade Strawberry' is rated USDA 10-11 (grown as a summer annual in cooler zones) and RHS H1c — Warm-temperate — can summer outdoors but must come in well before the first frost.

Can catharanthus roseus 'cora cascade strawberry' 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 catharanthus roseus 'cora cascade strawberry' 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.