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Hybrid TeaSam McGredy IV; McGredy RosesBicolour

Kronenbourg

A sport of the legendary Peace; bicolour crimson-red + golden-cream reverse; named after the Alsatian brewery Kronenbourg; in Great Britain — Flaming Peace.

Bud sport of Peace

Variety profile

Flowering

Repeat, with pauses

Peace lineage

Peace sport

Did NOT receive major official awards · overshadowed by its mother's fame

Winter hardiness

−20 °C

USDA zone 6b. In Ukraine with moderate winter protection.

Compare reference temperatures

Plant size

80–150 × 50–100 cm
person 170 cm80–150 cm
Habit
Upright, vigorous — a typical HT Peace-type rose
Dimensions
80–150 × 50–100 cm
Support
No support needed
Shoots
Strong, straight, hold the heavy double flowers well
Branching
Good

Flower

12–15 cm
Bud shape
Elongated, high-centred, coppery-crimson with a marked golden reverse
Open flower
Broad cup-shaped with a dramatic bicolour contrast — large, show-quality, 12–15 cm
Centre
Densely packed, with streaks of lemon-gold showing through the crimson
Fullness
Very double (41+), 40–50 petals
Flower carriage
Singly on a stem — classic HT

Fragrance

Light; fresh tea + fruit

Light — notes of fresh tea and fruity tones, strongest in the morning.

Disease resistance

3 out of 5
Black spotsusceptiblePowdery mildewresistant

3/5 — inherits Peace's moderate susceptibility to black spot; good against powdery mildew.

Sun

Full sun

The bicolour is more striking on cool nights.

Thorns

Moderate
thornlessfewmoderatemanyvery many

Medium number, typical of classic HT Peace-type roses.

Foliage

Dark green, leathery.

Other names

Flaming Peace
All characteristics in a table
Group
Hybrid Tea
Breeder
Sam McGredy IV; McGredy Roses, Northern Ireland
Bud shape
Elongated, high-centred, coppery-crimson with a marked golden reverse
Open flower
Broad cup-shaped with a dramatic bicolour contrast — large, show-quality, 12–15 cm
Centre
Densely packed, with streaks of lemon-gold showing through the crimson
Colour
Bright bicolour: the front of the petal crimson-red with streaks, the reverse butter-yellow / cream-golden. The contrast intensifies on cool nights; in the heat the reverse fades to cream and the front darkens. A 'fiery' character — hence also Flaming Peace.
Fullness
Very double (41+), 40–50 petals
Flower carriage
Singly on a stem — classic HT
Flowering
Repeat, with pauses
Fragrance
Light — notes of fresh tea and fruity tones, strongest in the morning
Hips
Not documented
Habit
Upright, vigorous — a typical HT Peace-type rose
Branching
Good
Shoots
Strong, straight, hold the heavy double flowers well
Thorns
Medium number, typical of classic HT Peace-type roses.
Dimensions
80–150 × 50–100 cm
Support
No support needed
Foliage
Dark green, leathery
Resistance
3/5 — inherits Peace's moderate susceptibility to black spot; good against powdery mildew
Variations of the variety
Code MACbo (prefix MAC = McGredy); a natural bud sport of the variety 'Peace' / 'Mme A. Meilland' (Francis Meilland 1935/1945); no deliberate cross; synonym Flaming Peace (UK, Ireland) — the same variety, MACbo

Colour scheme

Bright bicolour: the front of the petal crimson-red with streaks, the reverse butter-yellow / cream-golden. The contrast intensifies on cool nights; in the heat the reverse fades to cream and the front darkens. A 'fiery' character — hence also Flaming Peace.

Rose neighbours

Perennials to plant nearby

Neighbouring roses

The Peace family + classic bicolours — a dramatic HT group:

Companion perennials

Classic family — purple-silver accents soften the fiery contrast:

lavendercatmintlamb's earsoft lady's mantle

Availability worldwide

A classic HT with a 60-year history, two names by region:

  • 🇬🇧 UK: high · as Flaming Peace
  • 🇫🇷 France: high · as Kronenbourg
  • 🇪🇺 Mainland Europe: high
  • 🇺🇦 Ukraine: moderate · traditionally popular in collections

More about the variety

Hips
Not documented
Variations of the variety
Code MACbo (prefix MAC = McGredy); a natural bud sport of the variety 'Peace' / 'Mme A. Meilland' (Francis Meilland 1935/1945); no deliberate cross; synonym Flaming Peace (UK, Ireland) — the same variety, MACbo

How to grow

Where to plant. Classic HT beds, formal borders, mono-bicolour groups; ideal in a group with Chicago Peace as 'two sports of Peace, both bicolour'.

Climate. To −20 °C — in Ukraine with moderate winter protection; in the south — no protection.

Care. Classic HT — spring pruning to 3–5 buds; removing spent blooms encourages new flushes; seasonal disease prevention is essential because of the inherited susceptibility of Peace.

About the name

Name. 'Kronenbourg' — named after the French brewery Kronenbourg (Strasbourg, Alsace, founded 1664), a marketing name for continental Europe. 'Flaming Peace' — literally 'flaming Peace'; for the British market it points to a bicolour 'fiery' sport of the classic Peace. This is one variety under two trade names depending on the country.

Breeding. MAJOR CORRECTION: the breeder is Sam McGredy IV (McGredy Roses, Northern Ireland / New Zealand) — he discovered the sport and introduced it to cultivation. NOT Meilland, as is often confused (Meilland is the breeder of the seed parent, Peace). The sport was found in 1959; introduction — 1963 in Great Britain as Flaming Peace, 1965 on the continent as Kronenbourg (under a Meilland licence). Code MACbo (prefix MAC = McGredy). A natural bud sport of the variety 'Peace' / 'Mme A. Meilland' (Francis Meilland 1935/1945, WFRS HoF 1976) — there is no deliberate cross; it is a mutation.

Significance. One of the best-known sports of Peace in the world. No official major awards (AARS/ADR/AGM) — overshadowed by the fame of its parent, Peace. Our second rose from the Peace family in the catalogue, alongside Chicago Peace (Johnston 1962, also a sport). Other known sports of Peace: Speelwark, Climbing Peace (a climbing form, MEIcsa 1950 — a separate variety), Pink Peace (1959 — already an independent Meilland cross, not a sport). Often wrongly classified as a Grandiflora — it is an HT. Often confused with Chicago Peace — another sport of Peace, with a different colour.

Frequently asked questions about Kronenbourg

Does Kronenbourg need winter protection?

The cultivar’s reference temperature is −20 °C (USDA zone 6b). Overwintering depends on the conditions. In Ukraine with moderate winter protection.

How many times a season does Kronenbourg flower?

Repeat, with pauses.

How big does Kronenbourg grow?

80–150 cm tall, 50–100 cm wide.

Which diseases affect Kronenbourg?

Overall resistance: 3 out of 5. Moderate; inherits Peace's moderate susceptibility to black spot.

How much sun does Kronenbourg need?

Sun; full sun; the bicolour is more striking on cool nights.

What does Kronenbourg smell like?

Light — notes of fresh tea and fruity tones, strongest in the morning.

Gardeners' photos and reviews

My climate

Choose a reference temperature to compare with the cultivar’s data. This is not an overwintering forecast or advice on winter protection; consider wind, moisture and the duration of frost.

Regional data are generalised. USDA describes average annual extreme minima, not a forecast; the values in the list are rounded. Check the conditions at your site. More information: Roses in Ukraine's climate.