Super Excelsa Climbing rose HELexa – pharmaROSA® NEONATAL
As a pharmaROSA® NEONATAL own-root climbing rambler, Super Excelsa offers tray-grown propagation material that builds into vertical feature stock for pergolas, walls and arches, aligning well with UK nursery systems that must cope with wetter, windier spells in the west and north. Its dense, dark green foliage and moderate self-cleaning habit support consistent presentation in 5–7 L trained climber formats when grown on from 3–6‑month rooted cuttings. The robust H7 hardiness and medium resistance suit long-term, own-root production cycles where stable stands and predictable capacity matter more than rapid turnover. With a once-blooming canopy of crimson-red clusters backed by RHS AGM recognition, this cultivar underpins exclusive, space-defining vertical ranges for thematic and collection gardens. Its own-root base develops first strong roots, then structural shoots, then full ornamental effect over the first three years, giving professional growers a reliable scheduling horizon for premium, exhibition-grade climbing lines.
Usage options
Finished-product ideas
- 5–7 L trained exhibition climber – Own-root NEONATAL material grown to 3–5 canes in 5–7 L pots, highlighting dense foliage and once-blooming crimson clusters as an exclusive, space-defining vertical feature – retail / reseller ranges.
- Pergola pair feature set – Matched pairs grown on from uniform trays, trained for pergolas and arches with medium maintenance needs and RHS AGM backing, sold as coordinated vertical accents – thematic and collection gardens.
- Wall and fence greening line – Container-grown climbers selected for 190–310 cm spread and stable own-root structure, positioned as robust vertical garden features for structural greening – public‑realm and municipal suppliers.
- Collection-garden signature rambler – NEONATAL stock maintained in nursery beds as long-lived own-root plants, providing reliable cuttings and exhibition-quality finished climbers – show gardens and specialist collections.
- Project-ready trained climber stock – Professionally staked, 3–5 cane climbers in 5–7 L pots, leveraging winter hardiness and dense foliage for predictable installation into exposed vertical schemes – landscape and project channels.
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Super Excelsa Climbing rose HELexa (registered as HELexa), a rambler-type climbing rose in the Climbing rose commercial group; American Rose Society exhibition name Super Excelsa. |
| Origin and breeding |
Bred by Karl Hetzel, Karl Hetzel Rosenschule, Germany, from cross ‘Excelsa’ × unknown pollen parent; bred and introduced in 1986, with commercial distribution as a climbing rambler. |
| Awards and recognition |
Holds the Royal Horticultural Society Award of Garden Merit (AGM), giving strong, independent confirmation of garden performance and reliability for professional selection and marketing purposes. |
| Growth and structural characteristics |
Climbing habit with dense, dark green, glossy foliage; moderately thorny stems; height approximately 220–340 cm with 190–310 cm spread, forming an effective vertical and lateral covering framework. |
| Flower morphology |
Semi-double, cup-shaped flowers with 13–25 petals, small (about 0.5–1.5 in) and borne in clusters; non-remontant once-blooming habit provides a concentrated seasonal display rather than continuous flowering. |
| Colour data and phenology |
Crimson-red overall colour, ARS code MR, RHS 53A outer and 155D inner; vivid crimson-red buds and outer petals with a narrow white centre, sometimes shifting toward purplish tones and lightening in strong sun. |
| Fragrance and aroma |
Very weak, barely perceptible scent with a delicate, soft character; primarily selected for colour effect and structural impact rather than fragrance-driven applications in professional planting schemes. |
| Hip characteristics |
Occasionally produces small spherical orange-red hips around 6–10 mm in diameter, which follow flowering but are not a dominant ornamental or commercial feature of this cultivar. |
| Resistance and winter hardiness |
Medium disease resistance to powdery mildew, black spot and rust; hardy to approximately –32 to –29 °C (RHS H7, Swedish Zone 5, USDA 4b), with moderate heat and drought tolerance if irrigated in prolonged dry spells. |
| Horticultural recommendations |
Suited to walls, fences, pergolas, arches and obelisks; medium maintenance with some need for pest and disease control, benefits from deadheading; recommended as a staked, trained climber finished product from 5–7 L pots. |
Super Excelsa Climbing rose HELexa offers dense foliage, RHS AGM-backed exhibition value and hardy, regenerative own-root stands that support predictable vertical ranges; please contact us to align volumes, scheduling and long-term propagation plans.
