Bicentenaire de Guillot Générosa® MASbigui – pharmaROSA® NEONATAL rooted cutting
Crimson nostalgia and romantic flower form make Bicentenaire de Guillot Générosa® MASbigui a compelling own-root starting point for premium container and patio production, where flower quality and form drive an exclusive finished product offer for retail and reseller partners. The bushy, upright habit, dense dark-green foliage, and medium self-cleaning support homogeneous, easily-presented lines in 5–7 L routes, while remontant, cluster-flowered, large double blooms provide season-long colour impact aligned to thematic rose gardens and curated collections. Its strong, long-lasting tea-rose fragrance and stable crimson-to-mauve colour progression add clear differentiation for cut-flower and specimen uses, backed by H7 hardiness down to -26–-23 °C and tolerance of cooler, exposed situations typical of northern UK sites and Scottish schemes where winter and wind resilience remains important. Own-root production ensures long-term regeneration and stand stability under repeated cutting, with rooted cuttings arriving as tray-grown, uniform material that integrates efficiently into nursery propagation beds and container systems; in standard practice You will see root establishment in year one, framework shoot development in year two, and full ornamental expression from year three onward. Developed as pharmaROSA® NEONATAL propagation base, this cultivar can underpin private-label nostalgic shrub rose offerings and collection plantings, with predictable quality and capacity planning supported by a verified identity and premium rating suitable for high-value, exclusive shrub rose ranges.
Usage options
Finished-product ideas
- Générosa Heritage Patio 5–7 L – Bush-trained 3–5 cane plants in 5–7 L containers, highlighting romantic crimson blooms and strong fragrance as a premium patio line, routed through exclusive finished product benches for retail / reseller.
- Crimson Nostalgia Feature 40–50 L – Step selected bush-trained stock into 40–50 L containers for high-impact specimen use, leveraging upright habit and dense foliage for entrances and terraces in premium retail / reseller concepts.
- Romantic Cut & Shrub Dual-Purpose – Field or large-container shrubs managed for both ornamental sales and stem harvesting, using remontant, double blooms and strong scent to support boutique cut-flower and plant offers via retail / reseller.
- Bicentenaire Collection Bed Line – Uniform own-root plants for thematic or commemorative beds in 5–7 L, focusing on stable colour progression and heritage naming to anchor curated ranges for retail / reseller project tenders.
- Fragrant Terrace Duo Planting – Paired containers using bushy, upright plants with strong, long-lasting fragrance, targeted as premium terrace or balcony items in coordinated POS for design-led retail / reseller programmes.
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Current trade name Bicentenaire de Guillot Générosa MASbigui; registered cultivar name MASbigui; American Rose Society exhibition name Bicentenaire de Guillot; nostalgia Romantic shrub rose type for professional use. |
| Origin and breeding |
Bred by Dominique Massad for Roses Guillot, France, with introduction and registration in 2003; parentage not provided; developed within the Générosa collection as a romantic crimson shrub rose. |
| Growth and structural characteristics |
Bushy, upright shrub reaching approximately 75–105 cm in height and 50–70 cm spread, with dense, slightly glossy dark green foliage and moderate prickliness; medium self-cleaning requiring periodic manual deadheading. |
| Flower morphology |
Large double flowers, 26–30 petals, ball-shaped to pompon, presented in clusters with remontant flowering; the second flush is also abundant, supporting extended ornamental and cut-flower usage windows. |
| Colour data and phenology |
Deep silky crimson-red with velvety finish; dark black-purple buds open to intense crimson, then lighten to mauve; finally fade to patinated medium purple with lilac tint; colour holds well, only moderate fading in heat. |
| Fragrance and aroma |
Strong, long-lasting fragrance with a rich tea-rose character; double, cupped blooms partially conceal stamens, giving moderate pollinator value but high sensory appeal for fragrance-focused ranges and display plantings. |
| Hip characteristics |
Hip set generally poor due to double flowers; occasionally forms small spherical orange-red hips around 8–12 mm diameter, offering limited but attractive autumn interest without significant seed-borne spread issues. |
| Resistance and winter hardiness |
Rated H7 with hardiness around -26 to -23 °C, USDA 5b, Swedish zone 4; medium disease resistance to powdery mildew, black spot and rust; moderate heat tolerance, requiring regular watering during dry spells. |
| Horticultural recommendations |
Suitable for flower beds, containers, patios, cut-flower use and specimen planting; medium maintenance with occasional pest and disease control; best presented as bush-trained plants in premium 5–7 L containers. |
Bicentenaire de Guillot Générosa MASbigui combines romantic crimson blooms, strong fragrance and bushy, upright own-root growth for predictable, regenerating long-term stands, making it a sound candidate to discuss capacity, scheduling and tailored propagation supply.
