Wrapping tree trunks for winter prevents sunscald and rodent damage using light-colored Kraft paper or white plastic guards applied from the base to the first major branch.
A clear winter day can be the most dangerous thing for a young maple or sycamore. The sun warms the south-facing bark, then the temperature plunges at sunset — the rapid freeze causes the bark to crack open. That’s sunscald, and it’s preventable with a fifteen-minute wrap job done in late fall. The same wrap keeps voles and rabbits from chewing through the trunk when snow piles up.
Which Trees Need Wrapping — and For How Long
Newly planted trees and any tree with thin, smooth bark needs winter protection. Thin-barked species are the most vulnerable: maples, sycamores, lindens, and young fruit trees. New plantings need wrapping for at least two winters, until the bark develops texture. Thin-barked species benefit from five winters or more. A good general rule: only wrap for the first one to three years after planting, once the bark hardens and becomes furrowed.
The risk is highest in regions with intense winter sun and rapid temperature swings. The Front Range of Colorado and the Intermountain West are the classic trouble spots, but any US region that freezes at night and thaws during the day puts thin-barked trees at risk. If you’re shopping for supplies, our tested tree wrap recommendations cover the materials that actually hold up through a hard winter.
Picking the Right Wrap Material
Not all tree wraps are equally safe. Dark materials absorb heat instead of reflecting it, which makes sunscald worse instead of preventing it. Stick to light-colored materials only.
- Kraft paper: Standard brown paper, the most common option. Wrap it tightly in a spiral from the base up.
- White plastic tree guards: Rigid, light-colored collars that go around the trunk. Fast and effective.
- Commercial crepe-paper wrap: Light-colored and breathable. The professional standard.
- Hardware cloth: Mesh with ¼-inch or smaller openings. Best for rodent protection where voles and rabbits are heavy.
- Burlap (evergreens only): Loosely wrap from the lowest branches up, leaving a hole at the top for sunlight.
Never use black plastic guards — they absorb heat and cook the bark. Avoid Tyvek for routine use since it restricts airflow and traps humidity. Plastic soda bottles and old window screening work as homemade guards in a pinch, but the three commercial options above are more reliable.
How to Apply the Wrap Correctly
The technique matters as much as the material. A sloppy wrap can trap moisture or fall off before the cold arrives. Here are the two most common methods.
Method A: Paper or crepe-paper wrap. Clear debris from the base of the trunk. Wind the material upward in a spiral, overlapping each layer by one-third to one-half the width of the wrap. Continue up to the first major branch — about three to four feet high, which also protects against rabbits when snow is deep. Secure the top end with duct tape or masking tape applied in three rings: base, middle, and top. Never staple into the tree bark; staple only to the wrap itself.
Method B: White plastic tree guard. Clear the ground with a hand hoe and prune any shoots or leaves inside the guard area to reduce trapped humidity. Pat mulch around the base in a donut shape — three to four inches of mulch pulled six inches away from the trunk — to discourage critters from digging underneath.
For evergreens, loosely wrap burlap from the lowest branches to slightly above the highest point. Secure with twine at the top, middle, and bottom. Leave an opening at the top for sunlight to reach the foliage.
Timing: When to Wrap and When to Remove
Apply the wrap in late fall — end of November to early December — before the first hard frost. Remove it in early spring, around mid-April, after the last frost has passed. This timing is critical: leaving wrap on year-round traps moisture, invites insects, and prevents the trunk from expanding as it grows. The wrap comes off every spring and goes back on every fall. No exceptions.
A final note on common mistakes: do not apply de-icing salt near evergreens, and never dump salt-contaminated snow near their roots. Do not paint trees that have been planted less than two years. If you do use white latex paint on older trees, apply it only when temperatures are above 50°F. None of these substitutes replace a proper wrap — they address different problems.
FAQs
Can I use black plastic to wrap my tree for winter?
No. Black plastic and dark-colored guards absorb heat from the winter sun and transfer it to the bark, which is exactly how sunscald happens. Use only light-colored paper, white plastic guards, or commercial crepe-paper wrap.
Do I need to wrap an oak tree for winter?
Oaks have thicker, more furrowed bark than maples or sycamores and usually do not need winter wrapping. Only newly planted oaks — trees in their first one to three years — benefit from a wrap. Once the bark develops texture, the tree can handle winter on its own.
Does wrapping prevent animal damage or just sunscald?
It does both. A wrap that extends three to four feet up the trunk blocks rabbits and voles from chewing the bark, especially when deep snow gives them access to higher parts of the trunk. For heavy rodent pressure, use hardware cloth with ¼-inch mesh rather than paper or plastic guards.
References & Sources
- North Dakota State University Extension. “How to Wrap Trees for Winter.” Covers wrapping technique, material selection, and timing for ND and Upper Midwest winters.