Saving a Browning Dwarf Alberta Spruce: Spider Mites vs. Winter Damage

Browning needles on dwarf Alberta spruce (Picea glauca 'Conica') usually stem from two causes:

Spruce spider mites: Active in cool spring/fall. Cause yellow stippling on needles (toxin from feeding). Heavy infestations show webbing. Needles brown in summer heat. Spray miticide or horticultural oil in spring/fall when mites are present to prevent future damage.

Winter desiccation: Evergreens don't fully dormant. Dry autumn, wind, and frozen soil cause browning. Browned needles won't recover, but new growth may mask damage. Water deeply before winter; midwinter watering if dry and soil not frozen.