Roter Korsar ® – park shrub rose propagation material for professional production
Own-root tray-grown Roter Korsar offers reliable park-shrub performance with uniform, compact bush-trained development ideal for standard-container programmes, supporting stable supply into retail and reseller channels. Its disease resistance, ADR-rated hardiness and low-maintenance character translate into predictable, low-input shrub production for flower beds, hedges and urban green projects, even in exposed UK conditions with winter and wind tolerance typical of Scotland and northern England. Strongly remontant, semi-double dark-red clusters with good colour-holding build a consistent “reliable garden performance” story for your assortment, while dense, glossy foliage and moderate hip set add season-long structure in thematic rose gardens and collection plantings. With own-root material progressing naturally from root establishment in year one, framework building in year two and full ornamental expression by year three, Roter Korsar provides a long-lived, regenerating base that supports homogeneous stands, low replacement and maintainable wholesale capacity for integrated nursery networks.
Usage options
Finished-product ideas
- 2–3 L park-schrub line – Core SKU in standard 2–3 L containers, highlighting disease resistance and low maintenance for reliable garden performance – retail / reseller chains
- Landscape hedge module – Bundled batches for informal dark-red hedging, using own-root durability and bushy habit as selling points – landscape contractors and public-realm suppliers
- Collection garden feature block – Uniform own-root stock for thematic dark-red beds in show and collection gardens, built on colour stability and long lifespan – botanical and display gardens
- Pollinator-friendly red shrub – Semi-double clusters promoted as pollinator-attractive, combined with strong remontancy for season-long colour – eco-focused retail ranges
- Urban park shrub specification – Pre-selected lots for municipal beds and urban greens, emphasising fungal disease resistance, ADR/Gold Standard credentials and reduced maintenance – local authority framework contracts
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Park-shrub rose Roter Korsar® (KORromalu), registered 2006; commercial park rose type supplied as pharmaROSA® NEONATAL own-root propagation material with cultivar authenticity verified for professional use. |
| Origin and breeding |
Bred by W. Kordes & Sons, Germany (2003), parentage unknown; introduced after 2006 via W. Kordes’ Söhne®, forming part of their modern shrub assortment for garden and park applications. |
| Awards and recognition |
ADR certification Germany (2005); Dublin and Belfast Gold Medals (2006–2007); Kortrijk Silver Medal (2006); Hradec Králové Golden Rose (2008); UK Gold Standard (2008), indicating proven garden and landscape performance. |
| Growth and structural characteristics |
Bushy shrub with arching canes, dense dark green glossy foliage and moderate prickles; height about 120–180 cm, spread 60–100 cm, forming a full, well-branched framework suitable for beds, hedges and small-scale training. |
| Flower morphology |
Semi-double, flat flowers with 13–25 petals, medium size (approximately 1.5–2.75 in) borne in clusters; strongly remontant with abundant second and later flushes, and good self-cleaning as petals fall cleanly when spent. |
| Colour data and phenology |
Dark-red blooms (ARS dr; RHS 53A–53B) from burgundy buds to intense ruby red opening, remaining uniformly deep red with very little fading or bluing, giving a consistently saturated appearance throughout flowering. |
| Fragrance and aroma |
Fragrance is very weak to practically absent; scent description not provided in detail, so this cultivar is selected primarily for colour, health and structural qualities rather than for perfume-led applications. |
| Hip characteristics |
Produces spherical orange-red hips 8–12 mm in diameter, generally in moderate quantities; hips extend seasonal interest into autumn and can contribute to visual structure in park and urban planting schemes. |
| Resistance and winter hardiness |
Rated resistant to powdery mildew, black spot and rust; hardy approximately to -21 to -18 °C (USDA 6b, Swedish zone 3, RHS H7), suitable for a wide range of UK sites including colder, more exposed locations. |
| Horticultural recommendations |
Recommended for flower beds, parks, specimen planting, hedges and urban green spaces; low maintenance with minimal care needs, best sold from standard container production based on bush-trained, compact plants. |
Roter Korsar ® Park - shrub rose KORromalu combines proven disease resistance, strong remontancy and long-lived own-root reliability to support predictable, low-replacement shrub production; we invite you to discuss timing and capacity for your programmes.
