Photo: Krzysztof Ziarnek, Kenraiz, CC BY-SA 4.0

Climber (large-flowered)Poulsen (the Olesen couple), 1997Red

Naheglut

Velvety dark red, almost black-red, 'blazing'; rain-resistant; a climber for arches, walls and pergolas.

= 'That's Jazz' · German name after the Nahe wine region

Variety profile Gardeners' photos

Variety profile

Flowering

Repeat, in flushes

Repeat-flowering in flushes, from June to the first frosts. Months are approximate, for the climate of Ukraine.

Legacy

Poulsen

Danish variety (= 'That's Jazz'); German name — 'glow' of the Nahe wine region

Winter hardiness

−20 °C

USDA zone 6b–9. Southern and central Ukraine; in the north, with winter protection. South and central Ukraine · in the north, with winter protection.

Compare reference temperatures

Plant size

250–300 × 100–200 cm

Habit: Vigorous, upright, well-branched climber
Dimensions: 250–300 cm tall (up to ~420 cm) × 100–200 cm
Support: Needs support: arch, wall, trellis, pergola
Shoots: Long and flexible; bend them into arches and tie them in
Branching: Good

Flower

9–10 cm

Bud shape: Pointed, Hybrid Tea type (high centre)
Open flower: From goblet-shaped, high-centred to flattened, slightly reflexed; diameter 9–10 cm (up to ~12)
Centre: Full, tall (from its Hybrid Tea parent)
Fullness: Fully double (~45–50 petals)
Flower carriage: Mostly in small clusters, sometimes singly

Fragrance

Light; with a hint of old rose and light spice

Light: soft, with a hint of old rose and light spice.

Disease resistance

4 out of 5

Black spotresistantPowdery mildewresistant

Good resistance to black spot and powdery mildew; rain-resistant.

Sun

Full sun

A sunny, airy spot; not bothered by rain.

Thorns

Moderate

thornlessfewmoderatemanyvery many

The canes are prickly; the exact level is not stated in the sources.

Foliage

Dark green, glossy, leathery, healthy.

Other names

Breeder's code POULnorm.

All characteristics in a table

Group: Climber (large-flowered)
Breeder: Poulsen (the Olesen couple), Denmark, 1997
Bud shape: Pointed, Hybrid Tea type (high centre)
Open flower: From goblet-shaped, high-centred to flattened, slightly reflexed; diameter 9–10 cm (up to ~12)
Centre: Full, tall (from its Hybrid Tea parent)
Colour: Velvety dark red, almost black-red, 'blazing'; the colour is stable and does not fade
Fullness: Fully double (~45–50 petals)
Flower carriage: Mostly in small clusters, sometimes singly
Flowering: Repeat-flowering in flushes, from June to the first frosts
Fragrance: Light: soft, with a hint of old rose and light spice
Hips: Not known (they advise removing spent blooms)
Habit: Vigorous, upright, well-branched climber
Branching: Good
Shoots: Long and flexible; bend them into arches and tie them in
Thorns: The canes are prickly; the exact level is not stated in the sources.
Dimensions: 250–300 cm tall (up to ~420 cm) × 100–200 cm
Support: Needs support: arch, wall, trellis, pergola
Foliage: Dark green, glossy, leathery, healthy
Resistance: Good resistance to black spot and powdery mildew; rain-resistant
Variations of the variety: The same variety code (POULnorm) is sold as 'That's Jazz' / 'Jazz', 'Schloss Rosenburg' and others

Colour scheme

Velvety dark red, almost black-red, 'blazing'; the colour is stable and does not fade

Rose neighbours

Ingrid Bergmandeep red

Munstead Wooddark raspberry

Darcey Bussellraspberry red

Icebergpure white · contrast

Perennials to plant nearby

Catmint (Nepeta)sky blue

Sage 'Caradonna'purple

Lamb's ear (Stachys)silver

Lady's mantle (Alchemilla)lime

Neighbouring roses

Red and crimson varieties keep the same deep 'wine' palette around Naheglut.

Ingrid Bergman Munstead Wood Darcey Bussell Iceberg

Perennial companions

Silver, lime and blue spires 'light up' the dark red flower:

catmint (Nepeta)sage 'Caradonna'lamb's ear (Stachys)lady's mantle (Alchemilla)

Contrast accents

Silver and lime add light to the deep red palette:

Stachys byzantinaAlchemilla mollisNepeta Six Hills Giant

More about the variety

Hips: Not known (they advise removing spent blooms)
Variations of the variety: The same variety code (POULnorm) is sold as 'That's Jazz' / 'Jazz', 'Schloss Rosenburg' and others

How to grow

Where to plant. On an arch, pergola, trellis or wall, as a flowering vertical accent. The deep 'blazing' red stands out against a pale wall and beside silver perennials.

Climate. Southern and central Ukraine, grows without cover; in the north it needs winter protection (USDA zone 6b).

Care. Full sun, an airy spot and fertile, well-drained soil; bend the canes into arches and tie them to the support (this gives more flowers).

About the name

Name. The German trade name 'Naheglut' honours the Nahe wine region (on the Nahe river, Rhineland-Palatinate). 'Glut' means glow or embers, so the name means 'the glow of the Nahe', describing the blazing red colour (a nod to red wine).

Breeding. Bred by L. Pernille and Mogens Nygaard Olesen for the Poulsen Roser nursery (Denmark); crossed in 1986, on sale from 1997. Code: POULnorm. Parentage: an unnamed seedling × 'Norita' (a dark red Hybrid Tea), which gives the deep colour.

Significance. One Poulsen variety code that reached different markets under several names ('That's Jazz', 'Jazz' and others); in German-speaking countries the regional 'wine' name 'Naheglut' has stuck.

Frequently asked questions about Naheglut

Does Naheglut need winter protection?

The cultivar’s reference temperature is −20 °C (USDA zone 6b–9). Overwintering depends on the conditions. Southern and central Ukraine; in the north, with winter protection.

How many times a season does Naheglut flower?

Repeat-flowering in flushes, from June to the first frosts.

How big does Naheglut grow?

250–300 cm tall, 100–200 cm wide.

Which diseases affect Naheglut?

Overall resistance: 4 out of 5. Good resistance to black spot and powdery mildew; rain-resistant.

How much sun does Naheglut need?

Full sun; a sunny, airy spot; not bothered by rain.

What does Naheglut smell like?