How to Grow Daub's Compact Blue Spruce
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Daub's Compact Blue Spruce
Picea pungens 'Daub's Compact'
treeDaub's Compact Blue Spruce is a dwarf coniferous evergreen cultivar of the Colorado Blue Spruce, prized for its densely compact pyramidal form and striking silvery-blue foliage. It grows much slower and smaller than the species, making it ideal for residential landscapes where space is limited. This hardy, low-maintenance tree retains its color year-round and requires minimal pruning.
When should you plant Daub's Compact Blue Spruce in your zone?
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Example Daub's Compact Blue Spruce timeline · Pittsburgh, PA (Zone 6b)
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Plant Daub's Compact Blue Spruce
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Daub's Compact Blue Spruce
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-7, with best performance in zones 3-6
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Transplant/Establishment
First 1-2 yearsYoung sapling with small branching structure; foliage is bright blue-gray
Keep soil consistently moist without waterlogging. Water deeply 2-3 times weekly for first growing season. Mulch around base to retain moisture and regulate soil temperature.
Juvenile Growth
Years 2-5Compact pyramidal shape becomes more defined; dense branching from base to tip; color deepens to silvery-blue
Minimal pruning needed; this cultivar is naturally compact. Water during dry spells. Avoid heavy wind exposure when young.
Establishment/Maturation
Years 5-10Develops full dense form with tight pyramidal silhouette; strong blue color; branches reach from ground upward
Reduce watering frequency as tree becomes drought-tolerant. Remove any dead or diseased branches. Light pruning only to maintain shape if needed.
Mature Tree
Year 10 onwardFully formed compact specimen, typically 13-20 feet tall and 8-10 feet wide (depending on specific cultivar selection); vibrant silvery-blue year-round
Minimal maintenance required. Monitor for spider mites or spruce needle diseases in hot, dry conditions. Prune only to remove dead wood or correct damage.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with strong water to dislodge; use insecticidal soap or horticultural oil in spring and fall; maintain adequate moisture to prevent stress
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Prune and destroy infested branch tips; apply Bacillus thuringiensis (Bt) in late spring when buds open
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Remove affected branch tips; spray with horticultural oil in dormant season; apply insecticidal soap in growing season
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Improve air circulation; avoid overhead watering; remove affected branches; fungicide spray if severe
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Remove lower dead branches for air circulation; apply copper fungicide in spring; ensure well-draining soil
Uses
Ornamental Landscape Specimen
HouseholdDaub's Compact Blue Spruce serves as a stunning focal point in residential gardens, foundation plantings, and small yards due to its vivid blue color and naturally compact form. It requires minimal pruning and adds visual interest year-round. [source]
Wildlife Shelter and Food
WildlifeThe dense branching structure provides excellent shelter for birds and small mammals, while spruce cones supply seed food for wildlife in late fall and winter. The tree also attracts insects that serve as food for migratory species. [source]
Holiday Decorations
CraftBlue Spruce cones and branches are prized for holiday wreaths, garlands, and seasonal decorative arrangements. The silvery-blue color and conical form make it a natural choice for festive displays. [source]
Privacy Screen and Windbreak
HouseholdMultiple specimens can be planted in a row to create a compact living screen or windbreak. The dense foliage blocks views and dampens noise effectively in small spaces. [source]
Traditional Herbal Remedy
MedicinalSpruce needles contain vitamin C and have been used traditionally in teas and infusions for immune support and respiratory health. The needles and bark have antiseptic properties. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
N/A (ornamental tree). Cones may be collected in fall for decoration or seed, but this tree is grown for landscape appeal, not harvest.
Fun Facts
- 🌱 Daub's Compact Blue Spruce is a grafted cultivar developed to achieve extremely dense, slow growth—it grows only 4-6 inches per year, making it ideal for small gardens where full-size Colorado Blue Spruces would become too large.
- 🌱 The silvery-blue color comes from a waxy coating (glaucous) on the needles that reflects light, deepening in intensity during cold weather—the most vibrant blue typically appears in winter.
- 🌱 Colorado Blue Spruce (Picea pungens) is the state tree of Colorado and is one of the most popular Christmas tree species in North America, known for its perfect pyramidal shape and excellent needle retention.
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