DELGROUGE – red climbing rose, climber – Delbard
As a pharmaROSA® NEONATAL own-root climbing rose, DELGROUGE offers a reliable vertical accent for nursery propagation beds and trained climber programmes, with tray-rooted material designed for efficient logistics and consistent 3–6‑month development stages. Its dense, dark green foliage and vigorous climbing growth habit support space‑defining structures such as pergolas, arches, walls and trellises, while the velvety mid‑ to dark‑red colour remains stable and only slightly fades in strong sun. The cultivar responds well to being supplied as staked, trained material with 3–5 main canes, suited to 5–7 L containers and onward production as an exclusive, large‑flowered climber for specialty retail / reseller ranges. Own‑root production underpins long‑term stability in vertical feature plantings, with renewable growth and predictable stand structure; in practice, roots establish in year one, shoots build framework in year two, and full ornamental value is typically expressed from year three onwards, providing dependable capacity even for coastal, wind‑exposed UK projects where consistent, hardy climbers are required.
Usage options
Finished-product ideas
- Trained 5–7 L climber for pergolas – NEONATAL own-root plants pre-trained on stakes with 3–5 canes in 5–7 L pots, combining vigorous climbing growth and dense foliage for immediate vertical impact – premium retail / garden-centre climber tables
- Wall and fence red feature line – batches of DELGROUGE finished products focused on stable velvety red colour and reliable wall coverage, produced from uniform tray-rooted material – colour‑themed ranges for design-led resellers
- Exhibition-type collection climber – large-flowered, semi-double clusters and exclusive, space-defining habit positioned as an exhibition climbing rose within thematic rose collections – specialist nurseries and rose-focused mail-order partners
- Project-ready own-root climber stock – robust, hardy own-root plants built as a vertical garden feature component for pergolas, arches and trellises, providing predictable capacity for repeated call-offs – landscape contractors via wholesale networks
- Collection-piece with hip interest – climbers selected for limited but attractive bright red hips and dense framework, underpinning long-lived collection and show-garden plantings – arboreta, show gardens and public-realm suppliers
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Registered as DELgrouge, marketed as Delgrouge Large Colours DELgrouge, with ARS exhibition name Liliana; classified as a climbing rose in the Large Colours collection, climber large-flowered group. |
| Origin and breeding |
Bred by Georges Delbard, Pépinières et Roseraies Georges Delbard SA, France; introduced and distributed by Delbard in 2001, with ARS registration in 2001; parentage is not provided. |
| Awards and recognition |
not provided |
| Growth and structural characteristics |
Vigorous climbing habit reaching about 200–320 cm high and 140–230 cm spread, with dense, slightly glossy dark green foliage and moderate prickliness; growth form supports training on pergolas, arches, walls and trellises. |
| Flower morphology |
Semi-double, large cup-shaped blooms with around 13–25 petals, presented mostly in clusters; remontant with a plentiful second flush, providing an extended decorative period suitable for vertical display uses. |
| Colour data and phenology |
Red flowers with ARS code mr, RHS 53A and 46A; newly opened blooms are vivid mid-red and velvety, deepening towards dark claret before fading only slightly, with colour generally retained well even under strong sunlight. |
| Fragrance and aroma |
Fragrance character is not described in detail; available data indicate a very weak, subtle scent, so the cultivar functions primarily as a visual ornamental rather than a fragrance-featured climbing rose. |
| Hip characteristics |
Rose hips are expected to form only to a limited extent; when present they are ovoid, bright red, about 12–16 mm diameter, adding modest seasonal interest without significantly impacting ornamental flowering. |
| Resistance and winter hardiness |
Hardy to approximately -21 to -18 °C (RHS H7, Swedish Zone 3, USDA 6b); disease resistance is moderate for powdery mildew, black spot and rust; performs well in heat but needs irrigation if drought persists. |
| Horticultural recommendations |
Recommended for pergolas, arches, walls, fences and trellises as a vertical feature; medium maintenance with occasional pest control; best sold as a staked, trained climber in 5–7 L pots, ideally as a trained climber finished product. |
DELGROUGE offers vigorous climbing growth, dense foliage and stable velvety red colour on long-lived own-root plants, supporting predictable vertical feature production; we would be pleased to coordinate volumes and scheduling with your nursery team.
