Why Dwarf Alberta Spruce Brown on the Southeast Side

Dwarf Alberta spruces along a property line consistently brown on their southeast quadrants each winter while north sides stay green.

Cause: Winter Temperature Swings

The southeast face receives cold, moist easterly winds overnight, then intense morning sun around 10 AM. Water droplets on needles act as magnifying lenses, intensifying solar radiation and burning tissue. This freeze-thaw/photo-oxidation cycle repeats through late winter and early spring, causing characteristic one-sided desiccation.

Prevention

• Plant in locations with morning shade or afternoon sun only.
• Apply anti-desiccant spray (e.g., Wilt-Pruf) in late fall and again mid-winter.
• Erect a burlap screen on the southeast side for the first few winters.
• Ensure adequate fall watering so plants enter dormancy fully hydrated.

— Jonathan, Ecologica Gardens