Picea pungens Jan Byczkowski - Colorado blue spruce
Picea pungens Jan Byczkowski - Blue spruce
Picea pungens Jan Byczkowski
Blue Spruce, Colorado Blue Spruce, Colorado Spruce, Silver Spruce
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Description
Picea pungens 'Jan Byczkowski' is a dwarf selection of Blue Spruce with a broadly conical habit and regular structure, which comes alive with very bright yellow young shoots in spring. This colour persists for up to 6 weeks, then the shoots take on a natural blue-grey hue like the mature foliage of this conifer. The yellow colouring of the shoots lasts longer if the spruce receives plenty of sunlight. It will make a beautiful specimen in a small garden.
Native to the west coast of the United States and the Rocky Mountains of North America, up to Canada, Picea pungens, also known as the Colorado Blue Spruce or Blue Spruce, is a very hardy evergreen conifer belonging to the Pinaceae family. In its natural environment, it grows slowly, displaying an elegant and very regular conical habit, supported by strongly tiered horizontal branches. This tree can reach 25 to 40 m in height, tolerating slightly calcareous soils and some drought. However, it prefers slightly acidic and moist, deep soils. Its location should be carefully considered, as it does not like being transplanted.
Picea pungens 'Jan Byczkowski' is a variety selected in Poland at the J. Z. B. Byczkowski nursery in Kostrzyn and introduced to the market in 2000. It is characterised by moderate size, shiny silvery-blue foliage, and distinctly yellow young shoots. At 10 years old, this conifer forms a fairly small pyramid reaching about 2 m in height and up to 1.2 m in width. Its height increases by about 20 cm per year, with fairly slow growth. It produces shoots covered with very short and prickly needles, arranged in dense brushes and radially around the shoots. Its young spring shoots are a beautiful bright yellow, then they turn silvery-blue and remain so throughout the year.
Blue Spruce 'Jan Byczkowski' needs staking when young to develop a pleasing and regular habit, but it forms a leading shoot relatively quickly compared to other varieties. It is a sparkling adornment in the garden all year round. It thrives in many situations, under various climates, provided the soil is well-drained and not too calcareous, and the exposure is sunny. Its small size makes it ideal for large rockeries or borders, and its silhouette will stand out as a solitary specimen. This conifer pairs well with mineral elements in the garden. It can be combined with spring or summer annuals, which will highlight its foliage. Conifers naturally fit into contemporary settings. They pair well with heathers or early bulbs like snowdrops, planted in large drifts.
Plant habit
Foliage
Botanical data
Picea
pungens
Jan Byczkowski
Pinaceae
Blue Spruce, Colorado Blue Spruce, Colorado Spruce, Silver Spruce
Cultivar or hybrid
Other Picea
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Planting and care
Plant Picea pungens 'Jan Byczkowski' from September to November and from February to June in a fertile, well-drained, light, preferably neutral, slightly calcareous, neutral or slightly acidic soil, even dry in summer. A sandy, loamy, humus-bearing or slightly stony, not too calcareous soil will be suitable. Choose a sunny spot sheltered from prevailing winds. In overly damp conditions, it will be more susceptible to root rot. Select its location carefully, as this conifer does not appreciate transplanting. Soak the root balls well before planting. Add organic matter at planting time and water generously during the first few years, and in case of prolonged drought. Every year in April, apply a special conifer fertiliser and hoe the soil in summer. This extremely hardy conifer dislikes heavy soils waterlogged 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).
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The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:
- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
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.