

Picea chihuahuana - Chihuahua spruce
Picea chihuahuana - Chihuahua spruce
Picea chihuahuana
Chihuahua spruce
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View all →This plant carries a 24 months recovery warranty
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Description
Picea chihuahuana, the Chihuahua Spruce, is a large conifer found exclusively in the mountains of northwestern Mexico, where it is endangered. This majestic species, reminiscent in its habit and blue-green foliage of the famous Colorado Blue Spruce (Picea pungens), surpasses it in terms of heat resistance. It is increasingly being seen in parks and botanical gardens. This highly resilient conifer adapts to any well-drained soil and thrives in sunny exposures.
The Chihuahua Spruce is a plant from the Pinaceae family, like other spruces. It is a rare species, first observed in 1942 in the Talayotes of Chihuahua. Picea chihuahuana grows as small remnant populations on steep north-facing slopes, between 2000 and 3400 metres in altitude, in the Mexican Sierra Madre Occidental mountains. Of all the American spruces, this is the most southerly. In its natural habitat, this tree can reach up to 45 metres in height, with a trunk up to 1.20 metres in diameter. Its dimensions will be more modest in our climate: approximately 25 metres in height and 8-10 metres in spread at the base. The Chihuahua Spruce has a narrow conical to pyramidal habit when young, broadening with age. Its bark is initially pale grey, furrowed and scaly. On older specimens, it becomes dark grey-brown and exfoliates in small, irregular plates. Its crown is open, supported by a few long, tiered branches among many very short ones. The shoots are thick, pale buff. The buds are ovoid, pointed, and slightly resinous. The foliage consists of blue-green needles, matte with prominent white lines. They measure 1.7 to 2.3 cm in length and are tipped with a sharp thorn (handle with care, as they can be prickly). These needles are arranged spirally around the shoots. Mature specimens produce two types of cones located in different parts of the tree. The male cones measure 2 to 3 cm and are reddish. The female cones are pendulous, green, turning orange-brown when ripe, cylindrical, measuring 7 to 12 cm long and 4 to 5 cm wide when open. Between their scales, small black, winged seeds can be seen.
Picea chihuahuana deserves to be planted more widely in parks and large gardens, particularly in regions with very hot summers. With its beautiful evergreen foliage and imposing presence, it structures large spaces. The striking architectural qualities of conifers naturally lend themselves to the design of a contemporary garden, which favours the aesthetics of forms, silhouettes, and textures over the fleeting display of flowers.
Plant habit
Flowering
Foliage
Botanical data
Picea
chihuahuana
Pinaceae
Chihuahua spruce
North America
Other Picea
View all →Planting and care
The Chihuahua Spruce should be planted from September to November and from February to May in well-drained, slightly acidic, neutral or chalky soil. Preferably choose a sunny spot, at a good distance from buildings. Its cold resistance is estimated at -16°C at its lowest once mature, in well-drained soil. Once well-rooted, it tolerates drought fairly well. Soak the root balls thoroughly before planting. Add organic matter at planting time and water generously for the first few years, and during prolonged dry spells. Apply a specialist conifer fertiliser every year in April and hoe the soil in summer. This conifer dislikes heavy, very clayey soils that are waterlogged in winter.
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.