Why Trees Need Winter Protection
Winter damages trees through frost cracks, sunscald, desiccation, and snow/ice breakage. Young trees and newly transplanted specimens are especially vulnerable. Proactive protection prevents costly damage.
Preventing Frost Cracks and Sunscald
Winter sun warms the south and southwest sides of tree trunks during the day, then temperatures plummet at night. This rapid temperature change causes bark to split. Wrap young trunks with commercial tree wrap or white latex paint diluted 50/50 with water to reflect sunlight.
Mulch for Root Insulation
Apply 3-4 inches of organic mulch in a wide ring around the tree base, extending to the drip line if possible. This insulates roots, retains moisture, and prevents soil temperature swings. Keep mulch away from the trunk to avoid rot.
Anti-Desiccant for Evergreens
Evergreen trees continue losing moisture through their needles all winter while frozen roots can't replace it. Spray anti-desiccant products like Wilt-Pruf on foliage in late fall to create a protective coating that reduces water loss.
Prevent Snow and Ice Damage
Heavy snow can bend and break branches. Before a snowstorm, tie multi-stemmed evergreens together with soft rope to prevent splitting. After snowfall, gently brush snow off branches with a broom using upward strokes. Never shake ice-covered branches.
Water Before Ground Freezes
Trees entering winter with adequate soil moisture withstand cold better. Water deeply until the ground freezes, especially for young trees and evergreens. A slow trickle from a hose for 30-60 minutes per tree ensures deep penetration.
Protect from Animal Damage
Rabbits and voles strip bark from young trees in winter when food is scarce. Install hardware cloth cylinders around trunks, buried 2-3 inches below the soil surface and extending 18-24 inches above the expected snow line.
