Baby Blue Eyes Spruce is hardy in USDA zones 2 through 8 and develops its best color and densest form in full sun, tolerating part sun. It performs best in moist but well-draining soil; it dislikes soggy, poorly drained ground, so choose an open site with good air movement and room for a roughly 15-foot-wide mature spread.
Planting
- Pick a spot with full to part sun and well-draining soil; avoid low areas where water collects.
- Dig the hole twice as wide as the root ball but no deeper than the root ball is tall.
- Set the tree so the root flare (where the trunk widens at the base) sits at or just slightly above grade. Never bury the trunk.
- Backfill with the native soil, firming gently to remove air pockets, then water in deeply to settle the roots.
- For a privacy row or windbreak, space trees about 8 to 10 feet apart on center; if you want a tighter, faster-knitting screen, plant nearer the lower end of that range, keeping in mind each tree wants roughly 15 feet of eventual width.
- Mulch a 2 to 3 inch layer over the root zone, pulling it back a few inches from the trunk to keep the bark dry.
Care & maintenance
- Water. Water deeply and regularly through the first one to two years to establish a strong root system. Spruce also benefit from a deep soak going into a dry fall or winter to prevent needle desiccation. Once established, they are quite drought tolerant.
- Feed. Apply a light, slow-release evergreen or conifer fertilizer in early spring. Avoid heavy feeding, which forces weak, loose growth.
- Light. Full sun produces the bluest color and densest branching; too much shade thins the habit.
- Prune. This spruce rarely needs pruning and looks best left to its natural form. If you must shape it, trim only the new green growth in late spring. Never cut back into bare, brown, leafless wood, as spruce will not push new growth from old wood.
- Spacing. For a privacy screen or windbreak, hold to roughly 8 to 10 feet apart on center so each tree can fill out to its mature width.
- Pests & disease. Watch for spider mites in hot, dry weather (look for stippled, dull needles), and for needle cast diseases in damp, crowded conditions. Good air circulation, proper spacing, and a deep watering routine prevent most problems.
- Winter care. Established trees are very cold-hardy. In heavy-snow regions, gently brush snow load off the branches to prevent breakage, and keep new trees well watered before the ground freezes.