BLUE MONDAY® – lavender purple tea-hybrid rose – TANnacht
BLUE MONDAY® offers reliably uniform premium flower quality on an upright framework that suits bush-trained, 3–5‑cane production for 5–7 L containers aimed at exclusive retail ranges. As an own-root pharmaROSA® NEONATAL cutting, it provides a durable, regenerative base for nursery propagation beds and collection-style thematic plantings, supporting predictable volumes and low replacement over multi-year cycles. Its hybrid tea flower form, high‑centred buds and cut‑flower heritage match premium container and boutique cut-branch concepts where form and colour must remain consistent. Disease resistance to major foliar pathogens, together with H7 hardiness, underpins stable production even in cooler UK nursery sites, while its lavender‑purple colour and sweet, medium-strength fragrance secure its role as a signature specimen in exclusive finished lines. Over a three‑year development arc, roots establish in year one, structural shoots consolidate in year two, and full ornamental impact for high‑value finished product is typically realised by year three, supporting dependable supply into retail and reseller channels that also need good winter and wind tolerance in Scotland and northern England.
Usage options
Finished-product ideas
- Premium 5–7 L “Blue Monday” feature shrub – Upright, 3–5-cane bush-trained plants in 5–7 L containers, highlighting lavender-purple, high-centred blooms and low maintenance needs as an exclusive finished product – target: retail/reseller
- Hybrid tea exhibition collection pot – Curated 5–7 L line branded around its exhibition tea hybrid status and award history, leveraging flower form and fragrance for collectors and enthusiasts – target: retail/reseller
- Cut-and-enjoy patio rose – Compact containers positioned for patio use, promoted for garden cutting thanks to solitary, pointed buds and remontant flowering, built on own-root durability – target: retail/reseller
- Lavender theme garden centre range – Branded colour-theme block using its cool lavender tone and story name, with uniform NEONATAL-derived batches ideal for feature benches and display tables – target: retail/reseller
- Show-garden and project specimen line – Selected, well-framed bushes for designers and project buyers needing low-maintenance, disease-resistant focal points with reliable bloom quality – target: retail/reseller
Technical cultivar profile
| Parameter |
Data |
| Name and registration |
Hybrid tea rose group; registered as TANnacht, marketed as BLUE MONDAY® – lavender purple tea-hybrid rose – Tantau; ARS exhibition name Blue Moon; collection and commercial type hybrid tea. |
| Origin and breeding |
Bred by Mathias Tantau Jr. at Rosen Tantau, Uetersen, Germany; cross of ‘Sterling Silver’ seedling × unknown seedling; introduced and registered in 1964, initially distributed by NIRP International, France. |
| Awards and recognition |
Holds ADR recognition from 1964, indicating robust garden performance under trial conditions; awarded National Rose Society Certificate of Merit in 1964, confirming exhibition-level bloom qualities at introduction. |
| Growth and structural characteristics |
Upright growth habit with moderately dense, dark green, glossy foliage and moderate prickliness; adult height around 85–115 cm with 75–105 cm spread; weak self-cleaning, so spent blooms benefit from deadheading. |
| Flower morphology |
Medium-sized, double flowers with 26–39 petals, solitary on stems; high-centred, pointed, cut-flower-style buds; strongly remontant, delivering a pronounced second flush well suited to extended ornamental and cutting use. |
| Colour data and phenology |
Delicate lavender-purple base with silvery tint; buds deep crimson-purple with greyish sheen, opening to pure lavender blue; colour stable longer in cool weather, with some lightening in strong sun; RHS 75A outer, 75C inner. |
| Fragrance and aroma |
Well-scented hybrid tea with medium-strength, sweet, fruity fragrance; double flowers limit pollinator access, so value is primarily ornamental and sensory for people rather than for ecological or pollination-focused plantings. |
| Hip characteristics |
Very double blooms lead to sparse hip formation; occasional spherical, orange-red hips about 12–18 mm diameter may occur but are not a significant decorative or production feature in standard ornamental use. |
| Resistance and winter hardiness |
Rated H7 and suitable for USDA zone 6b and Swedish zone 3, tolerating approximately −21 to −18 °C; described as resistant to powdery mildew, black spot and rust, supporting lower chemical input under professional care. |
| Horticultural recommendations |
Recommended for flowerbeds, cut-flower use and as specimen plants; low general maintenance and good disease resistance; prefers regular watering in heat; best presented as bush-trained plants in premium containers from 5–7 L upward. |
BLUE MONDAY® – TANnacht combines award-backed hybrid tea flower quality, strong disease resistance and compact, upright structure in an own-root form that supports predictable, regenerative stands; we would welcome a discussion to align on volumes and scheduling.
