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Iseli Fastigiate Colorado Spruce - 5 Gallon
SKU:
2130485
UPC:
014949274682
$119.99
- Distinctive narrow, columnar Colorado spruce featuring brilliant blue needles and upward-facing branches on a tighter form than the species
- Reaches 10 to 15 feet tall by just 4 feet wide in 10 years, making it ideal as a vertical specimen or focal point in space-conscious landscapes
- Deer resistant, rabbit resistant, and road salt tolerant with rough grey bark that adds multi-season visual interest and texture
- Hardy across USDA Zones 3 through 7, providing year-round bright blue evergreen color even in the coldest northern climates
Iseli Fastigiate Colorado Spruce (Picea pungens 'Iseli Fastigiate') is a distinctive Colorado spruce cultivar that delivers brilliant bright blue needles and upward-facing branches on a more narrow, columnar form than the standard species. Reaching 10 to 15 feet tall by just 4 feet wide in 10 years, this moderate-growing evergreen is an outstanding vertical landscape specimen or focal point where space is a consideration but bold, year-round blue color is desired. New foliage emerges a vivid blue each spring, and the rough grey bark adds an interesting textural dimension that is especially visible during winter months. Deer resistant, rabbit resistant, and road salt tolerant across USDA Zones 3 through 7, Iseli Fastigiate Colorado Spruce provides reliable four-season beauty and architectural presence in the coldest climates where many other ornamental conifers cannot survive.
Plant Details
| Attribute | Details |
|---|---|
| Botanical Name | Picea pungens 'Iseli Fastigiate' |
| Plant Type | Evergreen Conifer |
| Foliage Color | Bright blue-green (vivid blue new growth) |
| Bloom Time | Conifer; prized for foliage |
| Growth Rate | Moderate |
| Growth Habit | Narrow columnar / Fastigiate |
| Mature Size (10 yr.) | 10-15 ft. tall, 4 ft. wide |
| USDA Zones | 3 - 7 |
| Light | Full sun |
| Water | When top 2 in. of soil is dry; prefers consistent moisture |
| Special Features | Dramatic Foliage Color, Easy Care, Benefits Birds |
| Landscape Use | Specimen, Privacy Screen, Focal Point |
| Deer Resistant | Yes |
| Rabbit Resistant | Yes |
| Road Salt Tolerant | Yes |
Size and Growth Habit
Iseli Fastigiate Colorado Spruce grows at a moderate rate to 10 to 15 feet tall and approximately 4 feet wide in 10 years, developing a narrow, columnar form with strongly upward-facing branches that give it a distinctive, tightly fastigiate silhouette. This compact profile makes it significantly narrower than standard Colorado spruce trees, which can spread 10 to 20 feet wide. The tight habit is ideal for smaller residential lots, narrow planting beds, foundation plantings, and formal garden settings where a bold vertical blue accent is desired without the wide footprint of a full-sized spruce. Over time, the trunk develops rough, attractive grey bark that adds further ornamental value.
Sunlight Requirements
This spruce requires full sun with at least 6 hours of direct sunlight per day for the most vibrant blue needle color and densest growth habit. Full sun exposure produces the brightest blue foliage, while shade causes the needles to become more green and the branching to open up, reducing the tight columnar form that defines this cultivar. For the most striking blue color and best structural integrity, choose the most open, sun-drenched planting location available.
Watering
Water Iseli Fastigiate Colorado Spruce deeply and regularly during the first few growing seasons to establish an extensive root system. Once established, it prefers consistent moisture but can tolerate periodic drought; avoid consistently soggy soils. In hot, dry climates or during extended summer drought, supplemental deep watering helps maintain foliage density and prevents needle browning. As with most spruces, well-drained soil that stays evenly moist without waterlogging provides the ideal moisture conditions for long-term health and growth.
Soil Requirements
Iseli Fastigiate Colorado Spruce prefers humus-rich, slightly acidic, well-drained soils. It performs best in soil with a pH of approximately 5.5 to 7.0. Amend planting holes with compost to improve fertility and drainage in heavy clay soils. While it tolerates a range of soil types, it does not perform well in consistently wet or waterlogged conditions, which can promote root rot and needle diseases. Good drainage is essential for long-term health, particularly in regions with heavy winter rains or poorly draining clay soils.
Care and Maintenance
- Fertilizing: Apply a general-purpose or acid-loving plant fertilizer before new growth begins in spring to support vigorous blue needle development.
- Pruning: Minimal pruning required; the natural fastigiate form is self-maintaining. Remove any dead or damaged branches in late winter.
- Watering: Maintain consistent moisture during the first 2 to 3 years; once established, water deeply during extended dry periods.
- Needle cast prevention: Ensure adequate air circulation and avoid overhead watering to minimize Rhizosphaera needle cast, a common spruce disease in humid climates.
- Spider mites: Monitor for spider mite activity during hot, dry weather; treat with horticultural oil or a strong water spray if detected.
Landscape Uses
Iseli Fastigiate Colorado Spruce is an outstanding vertical landscape specimen that provides year-round bright blue color and strong architectural form. Its narrow columnar habit makes it ideal as a focal point in mixed conifer gardens, a space-efficient privacy screen alternative in residential settings, and a dramatic accent in formal garden designs. Plant it as a standalone specimen in foundation plantings, pair it with lower-growing shrubs and perennials for a layered effect, or use it as a sentinel plant to frame entries, driveways, and gates. Its compact footprint allows it to fit into planting beds where full-sized Colorado spruce would be far too large.
Companion Plants
| Plant | Why It Works |
|---|---|
| Fountain Grass (Pennisetum) | Graceful arching plumes at the base provide soft textural contrast to the rigid, upright spruce column |
| Salvia (Salvia) | Vibrant flower spikes in warm colors create eye-catching contrast against the cool blue spruce foliage |
| Potentilla (Potentilla) | Cheerful yellow flowers add warm color at the base and thrive in similar sun and soil conditions |
| Ninebark (Physocarpus) | Rich burgundy or gold deciduous foliage provides bold seasonal color contrast beside the blue evergreen |
| Smoke Tree (Cotinus) | Billowing purple-pink "smoke" plumes and dark foliage create a dramatic warm-cool interplay alongside the blue spruce |
Wildlife Value
Iseli Fastigiate Colorado Spruce provides valuable year-round habitat for birds and small wildlife. The dense evergreen foliage offers protected nesting and roosting sites for songbirds throughout the year, particularly during winter when deciduous cover is absent. The branch structure provides shelter from wind, rain, and predators. While not a primary food source, the cones produced by mature specimens provide seeds for birds and small mammals. The plant's deer and rabbit resistance ensures that the foliage remains intact and continues to provide habitat value even in landscapes with significant wildlife browsing pressure.
USDA Hardiness Zones
Iseli Fastigiate Colorado Spruce is rated for USDA Hardiness Zones 3 through 7, making it one of the hardiest blue-foliaged conifers available. In Zone 3, it survives winter temperatures as low as -40 degrees Fahrenheit, providing reliable blue evergreen color in the most challenging cold-climate gardens of the northern United States and southern Canada. Its native species, Picea pungens, is indigenous to the Rocky Mountain region at elevations of 6,000 to 11,000 feet, giving it deep genetic adaptation to cold, dry winters and intense sunlight that translates into excellent garden resilience across its hardiness range.
- Distinctive narrow, columnar Colorado spruce featuring brilliant blue needles and upward-facing branches on a tighter form than the species
- Reaches 10 to 15 feet tall by just 4 feet wide in 10 years, making it ideal as a vertical specimen or focal point in space-conscious landscapes
- Deer resistant, rabbit resistant, and road salt tolerant with rough grey bark that adds multi-season visual interest and texture
- Hardy across USDA Zones 3 through 7, providing year-round bright blue evergreen color even in the coldest northern climates
Iseli Fastigiate Colorado Spruce (Picea pungens 'Iseli Fastigiate') is a distinctive Colorado spruce cultivar that delivers brilliant bright blue needles and upward-facing branches on a more narrow, columnar form than the standard species. Reaching 10 to 15 feet tall by just 4 feet wide in 10 years, this moderate-growing evergreen is an outstanding vertical landscape specimen or focal point where space is a consideration but bold, year-round blue color is desired. New foliage emerges a vivid blue each spring, and the rough grey bark adds an interesting textural dimension that is especially visible during winter months. Deer resistant, rabbit resistant, and road salt tolerant across USDA Zones 3 through 7, Iseli Fastigiate Colorado Spruce provides reliable four-season beauty and architectural presence in the coldest climates where many other ornamental conifers cannot survive.
Plant Details
| Attribute | Details |
|---|---|
| Botanical Name | Picea pungens 'Iseli Fastigiate' |
| Plant Type | Evergreen Conifer |
| Foliage Color | Bright blue-green (vivid blue new growth) |
| Bloom Time | Conifer; prized for foliage |
| Growth Rate | Moderate |
| Growth Habit | Narrow columnar / Fastigiate |
| Mature Size (10 yr.) | 10-15 ft. tall, 4 ft. wide |
| USDA Zones | 3 - 7 |
| Light | Full sun |
| Water | When top 2 in. of soil is dry; prefers consistent moisture |
| Special Features | Dramatic Foliage Color, Easy Care, Benefits Birds |
| Landscape Use | Specimen, Privacy Screen, Focal Point |
| Deer Resistant | Yes |
| Rabbit Resistant | Yes |
| Road Salt Tolerant | Yes |
Size and Growth Habit
Iseli Fastigiate Colorado Spruce grows at a moderate rate to 10 to 15 feet tall and approximately 4 feet wide in 10 years, developing a narrow, columnar form with strongly upward-facing branches that give it a distinctive, tightly fastigiate silhouette. This compact profile makes it significantly narrower than standard Colorado spruce trees, which can spread 10 to 20 feet wide. The tight habit is ideal for smaller residential lots, narrow planting beds, foundation plantings, and formal garden settings where a bold vertical blue accent is desired without the wide footprint of a full-sized spruce. Over time, the trunk develops rough, attractive grey bark that adds further ornamental value.
Sunlight Requirements
This spruce requires full sun with at least 6 hours of direct sunlight per day for the most vibrant blue needle color and densest growth habit. Full sun exposure produces the brightest blue foliage, while shade causes the needles to become more green and the branching to open up, reducing the tight columnar form that defines this cultivar. For the most striking blue color and best structural integrity, choose the most open, sun-drenched planting location available.
Watering
Water Iseli Fastigiate Colorado Spruce deeply and regularly during the first few growing seasons to establish an extensive root system. Once established, it prefers consistent moisture but can tolerate periodic drought; avoid consistently soggy soils. In hot, dry climates or during extended summer drought, supplemental deep watering helps maintain foliage density and prevents needle browning. As with most spruces, well-drained soil that stays evenly moist without waterlogging provides the ideal moisture conditions for long-term health and growth.
Soil Requirements
Iseli Fastigiate Colorado Spruce prefers humus-rich, slightly acidic, well-drained soils. It performs best in soil with a pH of approximately 5.5 to 7.0. Amend planting holes with compost to improve fertility and drainage in heavy clay soils. While it tolerates a range of soil types, it does not perform well in consistently wet or waterlogged conditions, which can promote root rot and needle diseases. Good drainage is essential for long-term health, particularly in regions with heavy winter rains or poorly draining clay soils.
Care and Maintenance
- Fertilizing: Apply a general-purpose or acid-loving plant fertilizer before new growth begins in spring to support vigorous blue needle development.
- Pruning: Minimal pruning required; the natural fastigiate form is self-maintaining. Remove any dead or damaged branches in late winter.
- Watering: Maintain consistent moisture during the first 2 to 3 years; once established, water deeply during extended dry periods.
- Needle cast prevention: Ensure adequate air circulation and avoid overhead watering to minimize Rhizosphaera needle cast, a common spruce disease in humid climates.
- Spider mites: Monitor for spider mite activity during hot, dry weather; treat with horticultural oil or a strong water spray if detected.
Landscape Uses
Iseli Fastigiate Colorado Spruce is an outstanding vertical landscape specimen that provides year-round bright blue color and strong architectural form. Its narrow columnar habit makes it ideal as a focal point in mixed conifer gardens, a space-efficient privacy screen alternative in residential settings, and a dramatic accent in formal garden designs. Plant it as a standalone specimen in foundation plantings, pair it with lower-growing shrubs and perennials for a layered effect, or use it as a sentinel plant to frame entries, driveways, and gates. Its compact footprint allows it to fit into planting beds where full-sized Colorado spruce would be far too large.
Companion Plants
| Plant | Why It Works |
|---|---|
| Fountain Grass (Pennisetum) | Graceful arching plumes at the base provide soft textural contrast to the rigid, upright spruce column |
| Salvia (Salvia) | Vibrant flower spikes in warm colors create eye-catching contrast against the cool blue spruce foliage |
| Potentilla (Potentilla) | Cheerful yellow flowers add warm color at the base and thrive in similar sun and soil conditions |
| Ninebark (Physocarpus) | Rich burgundy or gold deciduous foliage provides bold seasonal color contrast beside the blue evergreen |
| Smoke Tree (Cotinus) | Billowing purple-pink "smoke" plumes and dark foliage create a dramatic warm-cool interplay alongside the blue spruce |
Wildlife Value
Iseli Fastigiate Colorado Spruce provides valuable year-round habitat for birds and small wildlife. The dense evergreen foliage offers protected nesting and roosting sites for songbirds throughout the year, particularly during winter when deciduous cover is absent. The branch structure provides shelter from wind, rain, and predators. While not a primary food source, the cones produced by mature specimens provide seeds for birds and small mammals. The plant's deer and rabbit resistance ensures that the foliage remains intact and continues to provide habitat value even in landscapes with significant wildlife browsing pressure.
USDA Hardiness Zones
Iseli Fastigiate Colorado Spruce is rated for USDA Hardiness Zones 3 through 7, making it one of the hardiest blue-foliaged conifers available. In Zone 3, it survives winter temperatures as low as -40 degrees Fahrenheit, providing reliable blue evergreen color in the most challenging cold-climate gardens of the northern United States and southern Canada. Its native species, Picea pungens, is indigenous to the Rocky Mountain region at elevations of 6,000 to 11,000 feet, giving it deep genetic adaptation to cold, dry winters and intense sunlight that translates into excellent garden resilience across its hardiness range.
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