GRANDESSA – deep red climbing rose – Delbard
Bring a touch of old-world romance to a Dublin terrace or Irish cottage wall with GRANDESSA, a deep red Delbard climber bred for impact rather than fuss. Its velvety blooms repeat generously through the season, so even in a cool Irish summer you enjoy waves of colour and a mild, pleasant fragrance. Planted on its own roots in our pharmaROSA® ORIGINAL 2-litre pot, it establishes steadily for long-term reliability and easier recovery if wind, weather or pruning are less than perfect. Over time it forms a well-furnished climber with glossy dark foliage, ideal where you want lasting structure that copes with regular rainfall and heavy soil once drainage is improved. Think of it as a quietly spectacular partner for your front-garden drama, rewarding you more each year with its strong framework and glowing, deeply red flowers.
Usage options
| Target area |
Reasoning |
| Cottage-style front garden arch |
Grandessa’s repeat flowering and deep red, high-centred blooms create a classic archway that looks refined rather than fussy, perfect for a small Irish front garden where you want a welcoming focus without intensive care, suiting the occasional-gardener homeowner. |
| Training along a sunny house wall |
This climber’s long canes and dense foliage give reliable vertical coverage, providing a long-lived green backdrop that gains character with age, ideal when you want a once-planted, many-years solution for a family home, especially for the long-term-minded gardener. |
| Pergola over a seating area |
With its mild, pleasant scent and generous flower size, Grandessa works beautifully over a pergola where you sit out on summer evenings, offering gentle fragrance and colour overhead with only moderate maintenance, suiting fragrance-seeking beginners. |
| Feature on a sturdy fence |
Trained on wires along a fence, its glossy dark foliage and velvety blooms provide an elegant boundary that looks good even between flushes of flowers, a practical way to upgrade a standard garden fence for the style-conscious urbanite. |
| Romantic mixed border backdrop |
Used at the back of a border, Grandessa’s rich red tones contrast beautifully with cottage-garden perennials, while its remontant flowering keeps interest going across the season, making it a dependable anchor for the colour-loving planner. |
| Own-root long term garden investment |
On its own roots, Grandessa builds strength gradually, giving a robust woody framework and the ability to regenerate from the base if damaged, an advantage for exposed Irish gardens and those planning a lasting display, ideal for the future-focused buyer. |
| Climbing rose for rainy Irish climates |
Once established with decent drainage, its dense foliage and repeat flowering perform reliably in our soft, damp conditions, bringing structure and colour even where summers are short and showery, suiting the weather-aware gardener. |
| Developing garden over 1–3 years |
Planted from a 2-litre own-root container, it spends the first year building roots, the second filling out with strong new shoots, and by the third season you can expect its full climbing and flowering show, rewarding the patient beginner. |
Styling ideas
- Cottage Archway – Train Grandessa over a simple metal arch and underplant with sweet alyssum for scented ground cover – perfect for romantic front-garden enthusiasts.
- Dublin Terrace Screen – Run tensioned wires along a brick wall and combine with Californian lilac for layered colour and privacy – ideal for stylish city homeowners.
- Evening Pergola – Pair this mildly scented climber with white or pastel perennials beneath a pergola to enjoy soft twilight colour – suited to after-work relaxers.
- Classic Red Focus – Use Grandessa as a single specimen on a fence panel, keeping surrounding planting green and simple so the blooms take centre stage – great for minimalist gardeners.
- Soft-Edge Border – Let canes weave through Virginia obedient plant for a natural, slightly wild cottage look with strong structure behind – appealing to nature-leaning families.
Technical cultivar profile
| Feature |
Data |
| Name and registration |
Grandessa – deep red climbing rose, Famille Delbard collection; registered as DELsire, ARS exhibition name Messire Delbard, large-flowered climber for garden and exhibition use. |
| Origin and breeding |
Bred by Georges Delbard, France, from complex climber parentage including Danse du Feu and Guinée; bred and registered 1976, introduced 1978 by Delbard for ornamental climbing use. |
| Awards and recognition |
Prize winner at Bagatelle and Geneva International Rose Competitions in 1976, reflecting strong ornamental performance and show-standard flower quality among large-flowered climbing roses. |
| Growth and structural characteristics |
Vigorous climber 200–330 cm high, 120–200 cm spread, creeping habit with dense, glossy dark green foliage and many thorns; ideal trained on supports such as pergolas, fences and walls. |
| Flower morphology |
Large 7–10 cm double blooms, 26–39 petals, high-centred, pointed buds in classic cut-rose style; mostly solitary flowers on stems, remontant with a generous second flush through the season. |
| Colour data and phenology |
Velvety deep red flowers with dark undertone; buds blackish burgundy; fully open blooms uniform deep red with fine black edging; colour later dulls to brownish burgundy with a matt surface. |
| Fragrance and aroma |
Mild yet pleasantly noticeable fragrance, adding gentle scent without overwhelming nearby seating areas; suitable for garden use where a refined, unobtrusive perfume is preferred over strong scent. |
| Hip characteristics |
Produces moderate numbers of spherical bright red hips, 12–18 mm diameter (RHS 40A), adding seasonal autumn interest when spent blooms are left un-deadheaded on the plant. |
| Resistance and winter hardiness |
Hardy to about −26 to −23 °C (H7, USDA 5b, Swedish zone 4); disease profile: black spot resistant, powdery mildew and rust moderate, generally manageable with sensible garden hygiene. |
| Horticultural recommendations |
Best in full sun with improved drainage on heavier Irish soils; space 140–240 cm depending on use, plant 0.4–0.5 per m²; train securely, mulch well, and use at least 40–50 litre containers if pot-grown. |
Grandessa Famille Delbard roses DELsire offers velvety repeat-flowering blooms, enduring wall-covering structure and own-root resilience, making it a thoughtful choice for a long-lived Irish family garden.
