Picea pungens Glauca
Notify MePicea pungens 'Glauca', commonly known as Colorado blue spruce, is a striking, evergreen conifer prized for its dense, pyramidal form and distinctive silvery-blue to blue-green needle foliage. With its bold colour and symmetrical shape, it serves as a standout specimen tree or structural element in larger gardens. Slow to moderate in growth, it can eventually reach 10-15 metres high and 4-6 metres wide, making it ideal for formal, alpine, or woodland garden styles.
Plant in full sun with well-draining soil. Tolerant of cold, wind, and dry conditions once established, but prefers slightly acidic to neutral soil. Space at least 4-5 metres apart if planting in groups. Requires minimal pruning-only to remove dead or damaged branches. Avoid wet or poorly drained sites, as root rot may occur. Mulch annually to retain moisture and suppress weeds.
Trimming: Minimal pruning is needed. Lightly trim in late winter or early spring to remove dead, damaged, or poorly placed branches. Avoid cutting into old wood, as spruce does not regenerate well from bare stems.
Deadheading: Not applicable, as this conifer is grown for its striking blue foliage and form, not its flowers or cones.
Fertilising: Feed in early spring with a balanced, slow-release fertiliser formulated for evergreens. Avoid overfeeding, as excessive nutrients can lead to weak, sappy growth prone to pests and cold damage.
Watering: Water regularly during establishment (first 1-2 years). Once established, it's drought-tolerant but benefits from occasional deep watering in prolonged dry periods. Ensure soil is well-drained.
Pest Control: Watch for aphids, spruce spider mites, and adelgids. Yellowing or browning needles may be a sign of infestation. Treat with horticultural oil or insecticidal soap as needed.
Disease Management: Provide good air circulation and avoid excessive soil moisture to prevent fungal issues such as needle cast or root rot. Remove any affected needles or branches promptly, and avoid overhead watering. Ensure the planting site has free-draining soil.
Enjoy complimentary delivery anywhere in mainland New Zealand when you purchase plants worth $250 or more*.
For orders below $250, the following flat-rate delivery charges are applicable:
- Urban delivery within mainland New Zealand: $19.95
- Rural delivery within mainland New Zealand: $39.95
- Waiheke, Chatham and Great Barrier Islands: Please contact us for shipping options.
We aim to have all orders shipped within 14 days from the order date, unless a different shipping date is specified alongside a product.
