Bonanza ® Park - shrub rose KORmarie – pharmaROSA® NEONATAL
Professional own-root pharmaROSA® NEONATAL material of Bonanza® gives growers a reliable base for standard-container production where compact, bush-trained shrubs are expected to deliver colour-driven impact in flowerbeds, parks and specimen plantings. This ADR-recognised cultivar combines structure and height (110–180 cm, upright, dense, dark green glossy foliage) with large, double, cup-shaped clusters and vivid amber-yellow to crimson-red blooms that hold up well in heat with good colour retention. Own-root propagation supports long-term stability in nursery beds and collection plantings, aligning well with UK integrator systems that must cope with cooler, wind-exposed regions while maintaining homogeneous, low-replacement blocks. With moderate maintenance needs and medium disease resistance, it suits professionally planned plant-protection regimes and predictable, standard 2–3 L finished stock. Over time, own-root stands move from roots in year one through shoot build-up in year two to full ornamental value expression from year three, giving you a scalable, sustainable route to wholesale and retail/reseller ranges built on stable shrub performance.
Usage options
Finished-product ideas
- ADR park shrub 3 L – Standard 2–3 L shrub line highlighting ADR recognition and reliable garden performance, built from uniform bush-trained own-root material for colour-driven park and bed plantings – target audience/channel: retail garden centres and independent nurseries
- Heat-resilient bed rose block – Professionally grouped 2–3 L plants specified for beds and parks where good heat tolerance and upright structure are required, supported by scheduled plant protection – target audience/channel: landscape contractors and public-realm suppliers
- Thematic Kordes collection unit – Curated Bonanza® units within branded Kordes or ADR collections, using own-root stock for long-term collection stability and dependable re-ordering – target audience/channel: specialist rose nurseries and show-garden projects
- Dual-purpose garden & cut shrub – Standard container shrub positioned for both ornamental impact and informal cutting, exploiting large, double, self-cleaning blooms in compact, bush-trained form – target audience/channel: retail-led growers serving lifestyle-focused resellers
- Large-feature 40–50 L specimen – Upscaled specimen shrubs in 40–50 L containers, using the full 110–180 cm potential and dense glossy foliage as structural anchors in mixed schemes – target audience/channel: wholesale nurseries supplying designers and commercial landscapes
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Bonanza ® Park - shrub rose KORmarie; shrub / park rose, ARS exhibition name ‘Bonanza’, registered cultivar name KORmarie, commercial park-shrub type for professional production. |
| Origin and breeding |
Bred by Reimer Kordes, Wilhelm Kordes’ Söhne, Germany; parentage Seedling × ‘Arthur Bell’; introduced and registered in 1983 through W. Kordes’ Söhne for international shrub use. |
| Awards and recognition |
ADR 1984 rating indicates recognised garden performance under independent trial conditions, supporting professional confidence in long-term ornamental value and usability in diverse projects. |
| Growth and structural characteristics |
Upright shrub 110–180 cm high, 60–100 cm spread; dense, dark green glossy foliage, moderate prickliness, bush-trained compact habit, with good self-cleaning as most spent blooms drop naturally. |
| Flower morphology |
Large 2,75–3,95 in, double-flowered, cup-shaped blossoms with 26–39 petals, formed in clusters; remontant with a generous second flowering flush, suitable for repeated ornamental display. |
| Colour data and phenology |
Vivid amber-yellow base with crimson-red edging; ARS yb, RHS 14A outer and 46B inner; strong contrast on opening, fading via pale golden and brick-orange tones while retaining good colour visibility. |
| Fragrance and aroma |
Fragrance character not described in detail; strength reported as very weak and barely noticeable, so the variety is selected primarily for visual display rather than scented applications. |
| Hip characteristics |
Rose hips form only occasionally due to strongly double flowers; when present, they are spherical, bright red, about 10–16 mm in diameter, and contribute limited but neat seasonal interest. |
| Resistance and winter hardiness |
Hardy to approximately -21 to -18 °C, RHS H7, Swedish zone 3, USDA 6b; heat and moderate drought tolerance good; medium powdery mildew and rust resistance, black spot susceptible, needs monitoring. |
| Horticultural recommendations |
Suited to flowerbeds, parks, cut use and specimen roles; moderate maintenance, occasional plant protection; best routed via standard container production in 2–3 L pots from bush-trained, compact plants. |
Bonanza ® Park - shrub rose KORmarie offers upright structure, ADR-recognised performance and heat tolerance on a long-lived, predictable own-root base, making it a sound option to discuss for scheduled capacity and programme planning.
