Rosa Mamy Blue - Hybrid Tea Rose
Rosa Mamy Blue - Hybrid Tea Rose
Rosa Mamy Blue - Hybrid Tea Rose
Rosa Mamy Blue - Hybrid Tea Rose
Rosa Mamy Blue® 'Delblue'
The only one I ordered that doesn’t seem to be taking.
Waffyz, 09/03/2026
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This plant carries a 6 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
Description
The 'Mamy Blue Rose' (Delblue), a modern hybrid tea, undoubtedly offers the 'bluest' rose in the Delbard collection. This bush rose, perennial and floriferous, offers large, beautifully tubular, mauve-blue flowers, which are uncommon and look wonderful in flower beds and bouquets. Their powerful 'blue' rose fragrance is penetrating, almost addictive. Adorned with ample glossy green foliage, this upright bush provides magnificent flowers that last 10 to 15 days in a vase!
'Mamy Blue' or 'Delblue' is a modern bush rose with large clustered flowers obtained by Delbard in 1991. Like all so-called 'blue' roses, this award-winning variety is also distinguished by a magnificent fragrance. 'Mamy Blue' forms a bushy and upright shrub, a bit rigid, and reaches about 90 m (295ft) in height and 60 cm (24in) in width at maturity, with rapid growth. It produces green, sturdy, thorny and well-branched branches, which bear ample foliage of a fairly deep and glossy green. Throughout the summer, if faded flowers are removed, the plant produces successive waves of large dark red buds that open into very beautiful 10 cm (4in) diameter flowers, whose perfect shape, deep and tubular cup opening onto a very tight core, is typical of hybrid tea roses. They are composed of 35 to 40 mauve-blue petals, leaning more or less towards pink depending on the nature of the soil, gracefully fringed. They are clustered in bouquets and carried at the end of long shoots of the year or emerging on 2-year-old stems.
This 'Mamy Blue' rose is in the same vein as Charles de Gaulle, Sissi, Waltz Time or Claude Brasseur, with which it can compose a very pretty flower bed with a thousand shades of pink-mauve-blue enhanced by some bush sage or penstemon in shades of pink to fuchsia red. It will find its place in the garden of any flower lover, whether a novice or an experienced gardener. With its retro charm and beautiful fragrance, it deserves a graceful setting and a place not far from the house. Some light-flowering perennial plants (Autumn Asters, foxgloves, penstemons), grasses, lavenders and nepetas, are ideal for enhancing its beauty and accompanying it late in the season. For example, marry it with a red or garnet rose (Charles de Mills, Papa Meilland, Roseraie de l'Haÿ, Hansa); their colours and fragrances create a beautiful symphony. With a little daring, you can also try the combination of mauve and soft orange or yellow with a rose like Danaë or Lady of Shalott. Simple and easy-to-grow perennials such as Geranium Rozanne, Geranium Pink Cloud, Nepeta Walker's Low and campanulas will accompany it for most of the summer. It looks good on its own or in a group of 3 plants and a large pot on your patio or balcony. Its flowers make beautiful romantic bouquets in the company of pink peonies and white lilacs.
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Rosa Mamy Blue - Hybrid Tea Rose in pictures
Plant habit
Flowering
Foliage
Botanical data
Rosa
Mamy Blue® 'Delblue'
Rosaceae
Cultivar or hybrid
Rosa canina Laxa (Wrapped bare root), Rosa multiflora (4L/5L pot)
Planting and care
Choose a sunny or lightly shaded spot with well-worked soil that is not too heavy and has enough nutrients. Avoid planting in poor and excessively dry soils. Prepare the soil by crumbling it and adding an amendment, such as blood, fish and bone, at the bottom of the planting hole. After planting, water abundantly to remove air pockets and continue to water regularly for a few weeks to help the roots establish.
Pruning modern repeat flowering roses is important for flowering and should be done in three stages:
1. Regular maintenance pruning: During the season, regularly shorten the flowering branches and remove faded flowers along with their stem, leaving 2 or 3 leaves to encourage repeat flowering.
2. Preparatory autumn pruning: Lightly prune in preparation for the 'main' spring pruning. Note: This is not recommended in regions with cold winters as this could weaken the bush.
3. Spring pruning: In February-March, when the buds have become shoots 2 to 3 cm (1in) long, prune the young, strong branches to one-quarter of their length.
When pruning, always aim to remove dead wood, diseased branches, and weak shoots while opening up the centre of the bush. Retain the most vigorous branches, generally 3 to 6 well-positioned, to maintain an attractive habit. Always prune at a slant ½ cm or 1 cm (0in) above an outward-facing bud.
Roses may develop unsightly spots at the end of summer, but this is a natural occurrence and doesn't harm the rose's growth.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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