ISIDORA™ – golden-yellow flowerbed shrub rose – pharmaROSA® NEONATAL rooted cutting
Golden-yellow blooms, compact habit and a cluster-flowering pattern make Isidora™ a clearly defined shrub rose option for tray-based propagation and nursery container programmes focused on reliable visual impact in standard 2–3 L production. As a Frayla® collection cultivar with remontant flowering, it supports season-long colour in retail-oriented flowerbed and shrub assortments, aligning well with UK nursery practice where dependable repeat-flowering is a core sales driver and where coastal and exposed sites call for robust, winter-tolerant stock across supply chains. Own-root NEONATAL material gives a stable base for multi-year cropping, with H7 hardiness and USDA 5b performance enabling homogeneous field or container stands under diverse UK conditions. The bush-trained, shrub form is straightforward to carry through standard container routes, while the very double, cup-shaped flowers in warm tones position finished plants as reliable, premium bronze-rated flowerbed shrubs for retail and project channels. Long-term, own-root stands follow a natural development arc from root establishment in year one, through structural build in year two, to full ornamental expression from year three, underpinning predictable capacity planning and wholesale scheduling for nurseries building thematic rose collections, retail ranges and public-realm rose projects.
Usage options
Finished-product ideas
- 2–3 L golden flowerbed shrub line – compact, bush-trained shrubs with remontant, golden-yellow flowering in standard 2–3 L containers, positioned as reliable garden-performance bed roses – target audience/channel: retail / reseller.
- Collection-grade Frayla® display block – own-root Isidora™ propagated from NEONATAL trays for use in thematic or collection rose gardens, highlighting colour staging and cultivar identity – target audience/channel: show gardens and specialist nurseries.
- Public-realm border module – uniform, 55–85 cm shrubs produced via standard container routes for low, formal flowerbeds and borders in municipal or institutional schemes – target audience/channel: public-realm and landscape contractors.
- Premium bronze-tier mix container range – Isidora™ combined with other bronze-rated shrubs in harmonised 2–3 L assortments, leveraging remontant colour and reliable structure – target audience/channel: wholesalers building graded rose ranges.
- Colour-dynamics feature bed units – batches grouped by bud-to-fade colour stages to create visually engaging benches and beds demonstrating the golden to buttery-yellow transition – target audience/channel: garden centres and project-led retailers.
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Shrub rose from the Frayla® collection with registered cultivar name BOZisidfra, commercialised as Isidora™ Frayla®, a golden-yellow flowerbed shrub rose for professional own-root production; exhibition category shrub rose. |
| Origin and breeding |
Selected and bred by Biljana Božanić Tanjga from a ‘Graham Thomas’ seedling, introduced and registered in 2018 by PhenoGeno Roses d.o.o., with PhenoGeno Roses (Serbia) as initial distributor. |
| Awards and recognition |
not provided |
| Growth and structural characteristics |
Compact, bush-trained shrub with 55–85 cm height and 50–70 cm spread, moderately dense, pale green matte foliage and moderate prickliness, suited to flowerbed and low hedge applications in container or bed systems. |
| Flower morphology |
Very double, cup-shaped, medium-sized flowers (1.5–2.75 in) with 40+ petals borne in clusters, remontant with abundant second flowering, offering a full, ornamental bloom form with limited pollinator access. |
| Colour data and phenology |
Closed buds deep golden-yellow with greenish tip; newly opened blooms intense golden-yellow deepening to ochre; full bloom uniform golden-yellow; fading to paler golden and buttery-yellow tones, with moderate colour retention overall. |
| Fragrance and aroma |
Mild, restrained fragrance with a spicy character; primarily selected for visual and structural impact rather than strong scent, complementing the warm golden-yellow colour range in mixed shrub and bed plantings. |
| Hip characteristics |
Occasional ellipsoidal hips, 10–14 mm in diameter, orange-red when formed, providing modest additional seasonal interest without being a primary ornamental or production feature. |
| Resistance and winter hardiness |
Hardy to approximately -26–-23 °C (H7, Swedish zone 4, USDA 5b); disease sensitivity medium to powdery mildew and black spot, very sensitive to rust, requiring regular protection in professional production. |
| Horticultural recommendations |
Best used where intensive care is feasible; high maintenance need due to low disease resistance, requiring planned plant protection, especially against rust; suited to standard container production as a compact bush-trained plant. |
Isidora™ Frayla® offers compact, remontant, golden-yellow shrub performance on predictable, long-lived own-root stock, supporting homogeneous production stands and reliable garden-performance assortments; please contact us to coordinate volumes, timings and integration into your range.
