KORDIAM – orange-red hybrid tea rose – Kordes (KORdiam)
Hybrid own-root propagation of KORDIAM provides a predictable, upright framework shrub with 3–5 strong canes, ideal for premium container production where finished plants must carry high visual impact with limited intervention. The large, double, high-centred blooms deliver classic exhibition form in a vibrant coral-orange to salmon colour range, positioning this cultivar as an exclusive retail product for cut-flower style patio and feature roses. Reliable resistant foliage performance (H7, USDA 6a, Swedish zone 3, resistant to key fungal diseases) supports low-loss nursery blocks and consistent crop timing, including in sites exposed to colder, windier episodes typical of Scotland and northern England, where winter tolerance underpins supply security. On an own-root base, the bush is long-lived with stable structure; roots establish in year one, above-ground framework consolidates in year two, and full ornamental and commercial value is typically expressed from year three. This supports wholesale planning, private-label ranges, and coordinated premium container campaigns, backed by a professional propagation platform across larger nursery networks.
Usage options
Finished-product ideas
- Premium 5–7 L exhibition hybrid tea – Upright, bushy plants in 5–7 L pots, trained to 3–5 strong canes, highlighting the large, high-centred blooms and disease resistance as an exclusive container feature line – target: retail garden centres / specialist resellers.
- Colour-focus coral-orange series – A branded colour line built around KORDIAM’s vivid coral-orange to salmon transitions, leveraging remontant flowering and low-intervention foliage for reliable, high-impact displays – target: multiple retailers seeking premium statement roses.
- Show-bench and collector selection – Curated SKU promoted for exhibition and collector customers, using the high-centred, solitary blooms and recognised show performance as key selling points in a premium container route – target: specialist rose retailers and mail-order partners.
- Thematic collection centrepiece – Deployed as a focal hybrid tea within thematic or regional collections, using own-root longevity and stable framework to support long-term display plantings in 7 L and larger containers – target: nurseries supplying show gardens and institutional projects.
- Patio cut-flower style feature rose – Marketed as a cut-flower look rose for terraces and patios, combining the cut-rose type blooms with remontant performance and robust disease resistance in 5–7 L premium containers – target: independent garden centres and quality-focused resellers.
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Hybrid tea rose, registered as KORdiam, marketed as Kordiam – orange-red hybrid tea rose – Kordes, with ARS exhibition name Holsteinperle; commercial use since its 1987 introduction. |
| Origin and breeding |
Bred by Reimer Kordes at W. Kordes & Sons, Germany, from an unknown seedling × ‘Flamingo’; bred in 1984 and introduced and registered in 1987 by W. Kordes & Sons. |
| Awards and recognition |
Recognised in exhibition circles, including Queen of Show at the Western New York Rose Society Show under ARS auspices in 2001, supporting its show-bench potential. |
| Growth and structural characteristics |
Upright, bushy plant to around 100–140 cm high and 50–70 cm spread, with moderately dense, dark green, slightly glossy foliage and dense prickling, forming 3–5 strong framework canes under bush training. |
| Flower morphology |
Large, double, solitary blooms with 26–39 petals, high-centred and pointed in the classic cut-rose style, remontant with a generous second flowering phase providing continued ornamental utility. |
| Colour data and phenology |
Orange-red flowers (RHS 28B outer, 29C inner) opening deep coral-orange, ageing through salmon tones to pastel pink-peach; edges often salmon-pink with paler orange centres and moderate overall colour retention. |
| Fragrance and aroma |
Classified as unscented, with no noticeable aroma reported; double flowers and reduced stamen accessibility mean only moderate interest for pollinators relative to more open cultivars. |
| Hip characteristics |
Occasionally forms small, spherical rose hips, approximately 12–18 mm in diameter, in an orange-red colour, adding limited but sometimes useful seasonal interest late in the year. |
| Resistance and winter hardiness |
Rated resistant to powdery mildew, black spot and rust; hardy to about -23 to -21 °C (RHS H7, Swedish zone 3, USDA 6a), giving robust performance in colder and more exposed production environments. |
| Horticultural recommendations |
Recommended for low-maintenance production with generally little intervention; best presented as a bush-trained plant on 3–5 strong canes for premium container routes, especially 5–7 L formats; other specific uses not provided. |
KORDIAM – orange-red hybrid tea rose – Kordes (KORdiam) combines exhibition-quality blooms, reliable disease resistance and own-root longevity for predictable, low-replacement stands; please contact us to align on volumes and scheduling for your programmes.
