Hydrangea macrophylla Blauer Prinz
Hydrangea macrophylla Blauer Prinz
Hydrangea macrophylla Blauer Prinz
Hydrangea macrophylla Blauer Prinz
Bigleaf Hydrangea, French Hydrangea, Mophead Hydrangea
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Description
Hydrangea macrophylla 'Blauer Prinz' allows for the creation of large beds or superb hedges in partial shade or shade. It is a medium-sized ball-shaped hydrangea, which blooms abundantly quite late in the season, and remains decorative until November. This round shrub is adorned with inflorescences in small but numerous balls nestled in the foliage, whose colour is determined by the soil: light blue in acidic soil or soft pink in neutral soil. They fade beautifully, turning green and then deep red at the end of the season. This variety is particularly suitable for making bouquets.
Hydrangea macrophylla 'Blauer Prinz' is one of the many hybrids obtained from H. macrophylla and H. aspera, among others. The Hydrangeaceae family is native to China and Japan. This variety is characterised by vigorous growth, excellent floribundity, and late flowering. It usually blooms from the end of July. This shrub is barely taller than it is wide, reaching 1.5m (5ft) in height and width at maturity, with relatively fast growth. Its dense and round inflorescences measure from 8 to 12cm (3 to 5in) in diameter. The sterile florets successively change from green-yellow to pale-yellow before turning mauve-blue or pastel pink depending on the soil pH. At maturity, the flower balls are gradually invaded by different shades of green, red, purple, or violet. The tiny fertile florets, on the other hand, are barely visible, submerged in the globular head. The flowering is accompanied by dense, medium green, leathery, deciduous foliage in winter. It often takes on a beautiful purple hue in autumn, depending on the soil and the year. Hydrangeas can live for at least 50 years.
'Blauer Prinz' is a perfectly hardy shade variety. Hydrangeas are well known for brightening the north side of houses. This one thrives in the east with morning sun, or in the north, in beds as well as hedges. This variety is suited for cultivation in open ground as well as in large containers placed on a terrace or near an entrance. Even though these plants fear limestone, hydrangeas are not strictly acid-loving plants. They thrive in all non-calcareous but rich soils. Pair them with magellanica fuchsias or annual impatiens, or plant spring-flowering bulbs in front of their round silhouette. Enjoy their magnificent flowering in the garden or in fresh or dried bouquets in the house for a long time.
Hydrangea macrophylla Blauer Prinz in pictures
Plant habit
Flowering
Foliage
Planting and care
Plant in spring or early autumn, in a slightly shaded position, for example against an east-facing wall, or even to the north. Protect it from cold and drying winds. It does not necessarily require ericaceous soil, but appreciates deep, moist but well-drained, fairly fertile soil, possibly enriched with a good compound fertiliser before planting. It does not tolerate limestone, which causes its foliage to yellow and can cause it to wither. If planting near a wall and the soil is dry at its base, place the root ball at least 30 to 40cm (12 to 16in) away from it and incorporate a quantity of well-decomposed compost to better retain moisture in the soil. Very hardy, it can be planted in cold regions without fear.
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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