HELLA® – white climbing rose - Kordes | pharmaROSA® NEONATAL
Climbing own-root propagation material of Hella® gives nurseries a reliable, vertical-feature base for pergolas, arches, walls and fences, with uniform tray-rooted cuttings supporting predictable trained-climber production in 5–7 L containers for retail and reseller channels; its ADR-backed health and H7 hardiness to -26–-23 °C help underpin long-term collection or show-garden plantings even in cooler, exposed parts of Scotland and northern England, where winter and wind tolerance is a core planning concern, while the semi-double, cluster-flowering, white blooms with visible stamens provide a distinctive, space-defining vertical habit that suits thematic rose gardens and curated ranges; own-root vigour enables renewable growth and reduced replacement over the crop life, allowing You to build stable, homogeneous stocks, and, following a natural progression of strong root establishment in year one, structural cane development in year two and full ornamental impact from year three onwards, Hella® integrates smoothly into nursery networks and integrator systems that need repeatable quality; the trained release form with 3–5 canes streamlines labour at the finishing stage, while the award pedigree (ADR, Tokyo Gold, Baden-Baden Bronze) strengthens professional credibility for premium, space-defining climber offers, especially where collection-grade identity and authenticity are important; in short, this premium pharmaROSA® NEONATAL material provides a scalable, specialist climber option that fits high-volume UK production logistics and long-term vertical garden projects.
Usage options
Finished-product ideas
- 5–7 L trained climber for pergolas – Own-root NEONATAL material grown on to a staked, 3–5-cane trained climber in 5–7 L pots, using its vertical habit and hardiness to deliver ready-to-place pergola plants – premium retail / reseller lines.
- White climber for wall and fence schemes – Repeat-flowering, clear white clusters on moderately dense foliage, finished as a medium-maintenance climber in 5–7 L, targeted at curated wall and fence solutions – garden-centre and landscape reseller networks.
- ADR-certified flagship climber SKU – Emphasising ADR and trial medals, this trained 5–7 L climber becomes a range-leading vertical feature, underpinned by uniform own-root propagation – branded collections in specialist rose outlets.
- Pollinator-supporting arch collection item – Semi-double, staminate blooms used as the pollinator-aware element within a mixed arch range, grown on as a trained climber in 5–7 L pots – thematic and show-garden suppliers.
- Cool-climate climber range component – H7 hardy, own-root material configured as a robust trained climber SKU, designed for northern and exposed UK projects and repeat stocking – nursery and public-realm contract channels.
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Modern Climber, registered as KORditwol, marketed as Hella® Climbing rose KORditwol; exhibition name Hella, within the Climbing rose commercial group for ornamental garden and exhibition use. |
| Origin and breeding |
Bred in Germany in 2003 by Tim-Hermann Kordes from unnamed seedlings; introduced after 2011 by W. Kordes’ Söhne, with US registration in 2011 under Plant Patent 22 354. |
| Awards and recognition |
ADR Germany 2010 confirms balanced performance; Tokyo International Rose Trials Gold Medal 2010 and Baden-Baden International Rose Trials Bronze Medal 2010 support its use as a show-grade climber. |
| Growth and structural characteristics |
Climbing habit reaching 200–330 cm high with 60–120 cm spread, moderately dense, slightly glossy dark green foliage (RHS 139A) and moderate prickliness; self-cleaning performance is not provided. |
| Flower morphology |
Semi-double, cup-shaped flowers with 13–25 petals, large size around 2.75–3.95 inches, produced in clusters; a good repeat-flowering pattern with an abundant second flush during the season. |
| Colour data and phenology |
Clear, cool white blooms with ARS code W and RHS 155C/155D; buds ivory-white, opening snow-white, then dulling gently to creamy white while staying predominantly white, with very good colour retention in full bloom. |
| Fragrance and aroma |
Fragrance data are limited, with only a very weak, barely noticeable scent recorded; not positioned as a fragrance variety, making it suitable where strong aroma is not required or may conflict with design goals. |
| Hip characteristics |
Occasionally forms small spherical hips, 8–14 mm diameter, orange-red RHS 42A; hips are globular and sporadic, providing some seasonal interest without heavily influencing long-term ornamental effect. |
| Resistance and winter hardiness |
Rated H7, hardy approximately to -26–-23 °C and suitable for USDA zone 5b and Swedish zone 4; disease resistance is moderate for powdery mildew, black spot and rust, with no specific heat or drought data. |
| Horticultural recommendations |
Recommended as a climbing rose for pergolas, arches, walls and fences, with medium maintenance and occasional pest control; best finished as a trained climber product from staked, 3–5-cane own-root material in 5–7 L containers. |
Hella® Climbing rose KORditwol offers hardy, award-recognised vertical impact and moderate pollinator value on a predictable, long-lived own-root base, making it a sound option for trained climber programmes where we can jointly plan capacity and timing.
