Cold hardiness & minimum temperature

Is Salvia splendens 'Sizzler Burgundy' (Salvia splendens 'Sizzler Burgundy')cold hardy? Hardiness zone & min temp

Also called Sizzler Burgundy Salvia, Burgundy Scarlet Sage.

More about salvia splendens 'sizzler burgundy'

About Salvia splendens 'Sizzler Burgundy'

Salvia splendens 'Sizzler Burgundy' · also called Sizzler Burgundy Salvia, Burgundy Scarlet Sage · flowering

'Sizzler Burgundy' is a compact bedding salvia from the dwarf, early-flowering Sizzler series, bearing dense spikes of deep wine-red tubular flowers above fresh green foliage. A tender perennial grown as a summer annual, it blooms from early summer to frost in full sun to part shade, drawing bees and hummingbirds to its rich burgundy plumes.

Cold limit: USDA 10-11 (grown as an annual in cooler zones) · RHS H2 (16-30°C)

What salvia splendens 'sizzler burgundy''s hardiness rating actually means

Hardiness works differently for salvia splendens 'sizzler burgundy': it is grown as a seasonal crop, not overwintered. The question is not "what zone" but "how long is your frost-free growing window". 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 10-11 (grown as an 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

As an annual crop, its "minimum temperature" is the first hard frost — that is the end of the plant's life, not a survivable low. Many types are also damaged by light frost (around 0 °C).

Concretely, for salvia splendens 'sizzler burgundy' as it gets too cold:

Light frost (around 0 to −2 °C) damages or kills tender summer crops outright; cold-hardy types take a few degrees of frost.
The plant does not "survive winter" — its life cycle simply ends, by design, when frost arrives or it finishes cropping.
A surprise late spring frost can also kill young transplants set out too early, before the season even starts.

Can salvia splendens 'sizzler burgundy' go outside or overwinter — and where?

Time it to your frost dates: sow or plant out after the last spring frost, and aim to harvest before the first autumn frost.
In short-season zones, start it indoors or under cover to stretch the effective growing window.
Hardier crops in this group can be sown for an autumn or overwintered harvest in mild zones — check the specific crop.

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 salvia splendens 'sizzler burgundy' 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 salvia splendens 'sizzler burgundy'

Salvia splendens 'Sizzler Burgundy' is right on a hardiness edge in many gardens, so if you are pushing it, these measures buy it the margin it needs:

Use fleece, cloches or a cold frame at each end of the season to dodge a borderline frost and add growing weeks.
Have row cover ready for an unexpected late spring or early autumn frost.
Know your local last- and first-frost dates and count back the crop’s days-to-maturity to schedule the sowing.

Salvia splendens 'Sizzler Burgundy' hardiness — frequently asked questions

Is salvia splendens 'sizzler burgundy' cold hardy?

Hardiness works differently for salvia splendens 'sizzler burgundy': it is grown as a seasonal crop, not overwintered. The question is not "what zone" but "how long is your frost-free growing window". A seasonal crop, not a perennial. Salvia splendens 'Sizzler Burgundy' is grown 10-11 (grown as an annual in cooler zones); you sow after the last frost and harvest before the first one, then start again next year.

What is the minimum temperature salvia splendens 'sizzler burgundy' can survive?

As an annual crop, its "minimum temperature" is the first hard frost — that is the end of the plant's life, not a survivable low. Many types are also damaged by light frost (around 0 °C).

What hardiness zone is salvia splendens 'sizzler burgundy'?

Salvia splendens 'Sizzler Burgundy' is rated USDA 10-11 (grown as an annual in cooler zones) and RHS H2 — Tender — survives a frost-free greenhouse or a very mild, sheltered spot.

Can salvia splendens 'sizzler burgundy' survive winter outside?

Time it to your frost dates: sow or plant out after the last spring frost, and aim to harvest before the first autumn frost. In short-season zones, start it indoors or under cover to stretch the effective growing window. Hardier crops in this group can be sown for an autumn or overwintered harvest in mild zones — check the specific crop.

How do I protect salvia splendens 'sizzler burgundy' from frost?

Use fleece, cloches or a cold frame at each end of the season to dodge a borderline frost and add growing weeks. Have row cover ready for an unexpected late spring or early autumn frost. Know your local last- and first-frost dates and count back the crop’s days-to-maturity to schedule the sowing.