BLUE MONDAY® – lavender purple tea-hybrid rose - Tantau
Step onto your front path after rain and be met by lavender blooms that glow softly against dark green foliage, their fragrance a gentle, sweet counterpoint to the day. BLUE MONDAY® settles easily into compact London front gardens, coping reliably with typical British rainfall and changeable skies without demanding constant care. As an own-root rose in a pharmaROSA® ORIGINAL 2‑litre pot, it offers reassuring longevity and the ability to regenerate if stems are damaged, keeping its neat, upright structure for years. In a small border or a rainwater-friendly gravel strip, its cool-toned flowers bring an elegant, quietly romantic accent that stays tidy with simple deadheading. Well suited to clay-based urban soils once drainage is improved, it pairs beautifully with soft grasses and lilac perennials for a sustainable, low-input display, while rewarding you with high-quality cut stems for the vase and a calm, balanced garden mood.
Usage options
| Target area | Reasoning |
|---|
| Compact London or suburban front garden border |
The upright habit and modest footprint fit narrow beds along paths or railings, giving clear structure without overwhelming small spaces, while its own-root form underpins a long-lived, reliable presence for beginners. |
| Feature rose in a “girly” entrance planting |
Cool lavender-purple, high-centred blooms read as refined and slightly romantic rather than brash, ideal beside front doors with soft pinks and greys, offering an elegant accent that remains manageable for busy-owners. |
| Cutting patch or mixed cutting border |
Long, straight stems and classic hybrid tea form make it excellent for vases; repeat flowering keeps you supplied with scented blooms from early summer into autumn, suiting home floristry for home-stylists. |
| Rainwater-conscious, clay-based urban garden |
Once planted into improved, free-draining clay, it settles well and responds to regular rain, working neatly with permeable surfaces and simple soakaway areas in gardens managing heavy showers for city-gardeners. |
| Low-intervention family garden rose bed |
Good resistance to key fungal diseases means fewer sprays and less monitoring, while basic deadheading is usually enough to keep it flowering cleanly through the season for time-poor. |
| Own-root, long-term garden investment |
With no graft union to fail, the plant builds a stable root system in year one, stronger top growth in year two and full ornamental value from year three onwards, giving enduring structure for planners. |
| Formal or semi-formal front-garden scheme |
The neat, upright outline and moderately dense, glossy foliage create a composed look in symmetrical beds or alongside clipped shrubs, lending order and calm to small urban plots for order-lovers. |
| Large container on balcony, terrace or paved front |
In a 40–50 litre peat-free container with regular watering, it provides a contained, repeat-flowering focal point where borders are not possible, adding fragrance and colour close to seating for balcony-owners. |
Styling ideas
- Doorway-Drama – Plant BLUE MONDAY® with soft pink nepeta and pale heucheras in a slim border framing your front step for a calm, romantic welcome – ideal for style-conscious homeowners.
- Lavender-Line – Repeat-plant it along a short path with low lavender or dwarf sage edging to echo its cool tones and fragrance – perfect for busy urban gardeners.
- Balcony-Focus – Grow one plant in a 40–50 litre container with trailing ivy and silver-leaved herbs for a contained, scented feature – good for small-space dwellers.
- Evening-Vase – Combine its high-centred blooms in cutting rows with Crocosmia and Liatris for home-arranged bouquets – suited to home florists and enthusiasts.
- Calm-Contrast – Pair its lavender-purple flowers with Carex flacca ‘Blue Zinger’ and white perennials for a cool, contemporary palette – appealing to modern front-garden designers.
Technical cultivar profile
| Parameter | Data |
|---|
| Name and registration |
Hybrid tea rose registered as TANnacht, marketed as BLUE MONDAY® and also known in exhibition circles as Blue Moon; commercial type and group both listed as hybrid tea rose. |
| Origin and breeding |
Bred by Mathias Tantau Jr. at Rosen Tantau, Uetersen, Germany, from ‘Sterling Silver’ seedling × unknown seedling; introduced and registered in 1964, initial distributor NIRP International, France. |
| Awards and recognition |
Holds ADR recognition from 1964 for garden performance and a National Rose Society Certificate of Merit from the same year, underlining its long-standing ornamental and exhibition value. |
| Growth and structural characteristics |
Upright bush reaching about 85–115 cm high and 75–105 cm wide, with moderately dense, glossy dark green foliage and moderate prickliness; spent blooms usually need deadheading as self-cleaning is weak. |
| Flower morphology |
Classic high-centred hybrid tea blooms on mainly solitary stems, double with roughly 26–39 petals, medium-sized at about 4–7 cm across, strongly remontant with an abundant second flush in suitable conditions. |
| Colour data and phenology |
Cool lavender-purple with silvery tint; buds open deep crimson-purple, then pure lavender blue before softening to lilac-blue, colour lasting longer in cool weather and lightening somewhat in strong sun. |
| Fragrance and aroma |
Medium-strength, sweet fruity fragrance typical of classic hybrid teas; noticeable on still, humid days and especially from freshly opened blooms, adding sensory value both in the garden and in cut arrangements indoors. |
| Hip characteristics |
Due to very double flowers, hips are scarce; when present they are globular, about 12–18 mm diameter, orange-red in colour and generally of minor ornamental significance compared with the repeat flowering display. |
| Resistance and winter hardiness |
Rated resistant to powdery mildew, black spot and rust; hardy to around −21 to −18 °C (RHS H7, Swedish zone 3, USDA zone 6b), with moderate tolerance of short dry spells but needing regular water in hot weather. |
| Horticultural recommendations |
Best in full sun with free-draining soil; space 55–100 cm depending on use, 2.5–2.9 plants/m² for mass planting; suits beds, specimens and cutting, with generally low maintenance beyond watering and deadheading. |
BLUE MONDAY® TANnacht offers enduring own-root longevity, elegant lavender blooms for cutting and reliable disease resistance; a considered choice if you want a long-lived, low-fuss feature rose.
