Picea pungens Blue Mountain - Blue Spruce
Picea pungens Blue Mountain - Blue Spruce
Picea pungens Blue Mountain
Blue Spruce, Colorado Blue Spruce, Colorado Spruce, Silver Spruce
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This plant carries a 24 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.
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Description
Picea pungens 'Blue Mountain' is a superb selection of the Blue Spruce, a high-class conifer. It forms an elegant, regular, and dense pyramid, of a soft, truly luminous silvery blue. Its foliage is composed of small, sharply pointed needles densely implanted around its almost horizontal branches. Its elegant habit and medium growth make it suitable for planting alone or in the centre of a large group. It thrives in the sun or semi-shade, in well-drained soil, not too dry in summer, and preferably neutral to slightly acidic.
Originating from the west coast of the United States and the Rocky Mountains of North America, to Canada, the Picea pungens, also known as the Colorado Blue Spruce or Blue Spruce, is a very hardy evergreen conifer belonging to the pine family. In its natural environment, it grows slowly with an elegant and very regular conical habit, supported by tiered horizontal branches. This tree can reach 25 to 40 m (82 to 131 ft 2 in) in height and tolerates slightly chalky soils and some drought. But its preference is for slightly acidic and deep moist soils. Its location must be carefully considered, as it does not like to be transplanted.
The 'Blue Mountain' variety, derived from this species, is characterized by a moderate size and brilliant silvery blue foliage. Ultimately, this conifer forms a beautiful pyramid of 12.5 m (41 ft) in height and 4 m (13 ft 1 in) in width at the base on average. Its growth is slow while young, 15 to 25 cm (5.9 to 9.8 in) per year, then it accelerates a bit. It produces regularly tiered, almost horizontal branches covered with very short and prickly needles, arranged in dense brushes radially around the branches. Its young spring shoots are very light, then they turn to silvery blue and remain so throughout the year. Mature specimens produce light brown, elongated cone-shaped fruits, measuring 6 to 10 cm (2.4 to 3.9 in) long.
The Blue Spruce 'Blue Mountain', sparkling all year round, is an ornament for the garden. It thrives in many situations and many climates, as long as the soil is well-drained and not too chalky and the exposure sunny. This conifer goes well with large stones, geometric lines and masonry works. It can be associated with spring or summer annuals, which will highlight its foliage. The architectural qualities of conifers naturally impose themselves in a contemporary design. These plants structurally enhance a border and mark paths and entrances. They go well with heathers or sage bushes, or ground cover plants like aubrietas, cerastium, as well as flowering bushes like gauras. The key is to play with volumes and colours.
Plant habit
Foliage
Planting and care
Picea pungens 'Blue Mountain' is best planted from September to November and from February to June in fertile, very well-drained, light, rather neutral, slightly chalky, neutral or slightly acidic soil, even dry in summer. A sandy, loamy, humus or slightly stony soil, not too limey will be suitable. Choose a sunny location sheltered from prevailing winds. In damp conditions, it will be more susceptible to root rot. Choose its location carefully, as this conifer does not appreciate transplanting. Soak the root ball well before planting. Provide an organic fertilizer at planting and water abundantly for the first few years, and in case of prolonged drought. Provide a special conifer fertiliser every year in April and weed the soil in summer. This extremely hardy conifer dislikes heavy, water-logged soils in winter. Pruning is not necessary.
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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