Bonanza ® Park - shrub rose KORmarie
Colour contrasts of glowing yellow and red make Bonanza ® a natural focal point in classic British front gardens, while its ADR background promises reassuring reliability for typical family plots. This upright park-shrub form builds a dense, leafy structure with glossy dark foliage, giving you a strong framework even outside peak flowering. Clustered, double blooms appear in generous flushes through the season, gradually softening in tone but keeping their cheerful presence in mixed cottage borders. As an own-root plant, it settles in steadily for long-term longevity, rebuilding from the base if ever cut back hard and supporting fuss-free maintenance over many years. The pharmaROSA® ORIGINAL 2‑litre format is easy to handle and quick to establish, particularly helpful where you may face heavier soils and want dependable growth despite challenging weather patterns.
Usage options
| Target area |
Reasoning |
| Front garden focal shrub |
Use as a single, upright shrub near the front door or along a path where its vivid yellow and red blooms draw the eye and the dense, dark foliage provides year-round structure; suited to tidy, welcoming entrances for the style-conscious beginner |
| Small group planting in beds |
Plant 3–5 shrubs at recommended spacing in a small bed to create a coherent block of colour; the upright habit and consistent height give a neat, organised look without intricate design work, ideal for relaxed but ordered homeowners |
| Mixed cottage-style border |
Combine with perennials such as lady’s mantle or honesty so the strong bicolour flowers emerge from a softer planting matrix; the rose’s steady repeat flowering anchors the scene, helping busy gardeners achieve characterful cottage charm for time-poor gardeners |
| Low maintenance family shrub corner |
Its good self-cleaning means most spent blooms fall away naturally, reducing deadheading and keeping the plant looking tidy around play areas and seating; own-root growth supports recovery after rough weather or accidental damage, reassuring practical families |
| Informal flowering hedge |
Planted in a row at hedge spacing, Bonanza ® forms a colourful, semi-open screen with repeated flushes of amber-yellow and crimson-edged flowers; a simple annual prune is usually enough to maintain height and shape, convenient for suburban neighbours |
| Feature shrub in challenging weather sites |
Suited to exposed or variable spots where sturdy growth and tested hardiness help maintain display even with strong wind and driving rain common in many British gardens, supporting those with less-sheltered plots and limited time, particularly concerned owners |
| Long-term structural planting |
Chosen for its shrub form and own-root longevity, it develops into a stable, woody framework over several seasons; once settled, annual light pruning and basic feeding are usually sufficient, giving dependable impact for future-focused planners |
| Developing new gardens over 1–3 years |
Ideal where you want clear progress: first it concentrates on rooting, then stronger shoots, and by the third year it typically reveals its full ornamental potential, encouraging those establishing gardens gradually, especially forward-looking starters |
Styling ideas
- Doorstep – Position Bonanza ® by the front path with low Alchemilla mollis to soften the base, giving a welcoming cottage-style entrance – for design-conscious homeowners who want colour without complex plans
- Cottage – Mix 3 shrubs with honesty and nettle-leaved bellflower for layered, slightly informal borders that still read as tidy and intentional – for those seeking a classic country feel in town gardens
- Structure – Use as a mid-height backbone behind low perennials so its dark foliage and upright habit hold the line even between flushes – for planners who value clear shapes and easy upkeep
- Hedge – Plant a loose row along a drive or boundary where repeat blooms punctuate a green screen, softening fences and parking areas – for families wanting privacy and colour with simple annual trimming
- Accent – Place a single shrub in a large 40–60 litre terrace container with free-draining compost to enjoy close-up colour near seating – for busy urban gardeners wanting maximum effect from one reliable rose
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Shrub rose, park type; registered as KORmarie and marketed as Bonanza ® Park - shrub rose KORmarie; ARS exhibition name Bonanza within the shrub rose category. |
| Origin and breeding |
Bred by Reimer Kordes at Wilhelm Kordes’ Söhne in Germany from Seedling × ‘Arthur Bell’; introduced and registered in 1983 by W. Kordes’ Söhne. |
| Awards and recognition |
Holds the ADR award (1984), indicating strong garden performance in independent German trials, including overall robustness, ornamental value and suitability for general landscape and private garden use. |
| Growth and structural characteristics |
Upright shrub with dense, glossy dark green foliage, moderately thorny shoots; height typically 110–180 cm with a 60–100 cm spread, forming a tall, well-filled bush in beds, borders or informal hedges. |
| Flower morphology |
Large, double, cup-shaped blooms (26–39 petals) produced mainly in clusters; remontant with a generous second flowering wave, giving repeated displays of sizeable flowers through the main growing season. |
| Colour data and phenology |
Yellow-red bicolour; vivid amber-yellow base with crimson-red edging (RHS 14A outer, 46B inner), strong contrast on opening, then gradually softening as yellow pales and red tones mellow towards brick orange. |
| Fragrance and aroma |
Fragrance is very weak and generally barely noticeable; grown primarily for its strong visual impact and colour effects rather than scent, suitable where perfume is not a priority or in mixed schemes with scented companions. |
| Hip characteristics |
Rose hips form only occasionally due to the double flowers; when present they are small, spherical, bright red and around 10–16 mm, adding minor seasonal interest without dominating the plant’s appearance. |
| Resistance and winter hardiness |
Classified to about -21 to -18 °C (USDA 6b, RHS H7); good heat tolerance and moderate drought resistance; disease resistance medium, with some susceptibility to black spot, so occasional protection may be beneficial. |
| Horticultural recommendations |
Best in full sun with fertile, well-drained soil; suited to flowerbeds, parks, cutting and specimen use; moderate maintenance with light pruning, feeding, watering in dry spells and selective plant protection as needed. |
Bonanza ® Park - shrub rose KORmarie offers vibrant bicolour flowers, dependable structural growth and long-lived own-root resilience, making it a thoughtful choice if you wish to enjoy strong colour with straightforward care.
