Are New Brunswick shrubs wrapped in burlap for winter?

Yes, some shrubs in New Brunswick benefit from burlap wrapping, but not all shrubs need it — and wrapping the wrong plants can actually cause more harm than good.

Burlap is a tool for specific situations, not a blanket solution for every shrub in your yard. Understanding when and why to wrap helps you protect the plants that truly need it while saving yourself unnecessary work.

When Burlap Wrapping Makes Sense in NB

The main reasons to wrap shrubs in New Brunswick are wind protection, salt spray protection, and preventing winter burn on broadleaf evergreens. Broadleaf evergreens like rhododendrons, mountain laurel, and boxwood are the most common candidates. These plants keep their leaves all winter and continue losing moisture through them, but the frozen ground prevents roots from replacing that moisture — a condition called desiccation or winter burn. Burlap acts as a windbreak to slow that moisture loss.

Newly planted shrubs — regardless of species — also benefit from wrapping during their first one or two winters while their root systems are still establishing. Even a hardy Zone 4 shrub can struggle its first winter if roots haven't fully anchored.

In coastal areas like Saint John and Shediac, salt-laden winds off the Bay of Fundy can scorch exposed evergreens. A burlap screen (not a tight wrap, but a three-sided windbreak) on the windward side makes a real difference for exposed foundation plantings.

What Doesn't Need Wrapping

Deciduous shrubs — lilac, spirea, viburnum, potentilla, native dogwoods — are generally winter-hardy in NB without wrapping. These plants go fully dormant and have no leaves to desiccate. Wrapping them traps moisture and can actually promote fungal disease or provide cozy habitat for rodents that will chew the bark.

Hardy conifers like mugo pine, juniper, and cedar are usually fine without wrapping, though a burlap screen on the windward side can prevent browning on exposed plantings.

Timing Is Everything in New Brunswick

Apply burlap in late October, after the shrub has hardened off but before the ground freezes solid. Wrapping too early (while temperatures are still mild) traps heat and humidity, which encourages disease. Remove burlap in mid-April — not too early if late frosts are forecast, but don't leave it on past the point where new growth begins, or you'll bake the plant.

Practical Tips

Wrap loosely — burlap should allow some air circulation, not be cinched tight to the branches. Use wooden stakes to create a frame around the shrub rather than wrapping the plant directly when possible. Avoid plastic sheeting, which traps heat and moisture and does more damage than good. Secure the burlap with twine, not staples or wire that can damage bark.

For roses — especially hybrid teas — a different approach works better: mound soil or compost 20-25cm around the base after the ground firms up, then add a foam rose cone or burlap wrap over top.

If you're unsure which of your shrubs need protection or you have a large property with significant foundation plantings, a local landscaper can assess your specific situation. New Brunswick Landscaping can match you with a local pro for a free estimate — it's a good investment to get the right advice before an NB winter does the damage for you.