Are landscape fabric alternatives better than fabric for NB gardens?

In most New Brunswick garden situations, thick organic mulch (3-4 inches of cedar or hardwood) is a better weed suppression strategy than landscape fabric, which tends to cause more problems than it solves in Maritime conditions within 2-3 years of installation. While landscape fabric initially blocks weeds effectively, NB's heavy rainfall, spring thaw cycles, and abundant organic debris create conditions where fabric degrades, clogs, and actually traps weed seeds on top of the fabric surface.

The core problem with landscape fabric in New Brunswick is that organic matter accumulates on top of the fabric very quickly in the Maritime climate. Decomposing leaves, pine needles, and mulch break down into a thin layer of soil-like material on the fabric surface, and weed seeds readily germinate in this layer. Within 2-3 years, you often end up with weeds growing on top of the fabric while the fabric itself prevents you from easily pulling them out because their roots weave through the mesh. Meanwhile, the fabric blocks beneficial earthworms and soil organisms from accessing the surface, degrading soil health underneath.

Cardboard and newspaper are effective short-term biodegradable alternatives that work well for new NB garden bed establishment. Lay overlapping sheets of corrugated cardboard (remove tape and staples) or 6-8 layers of newspaper directly on the ground, wet them thoroughly, and cover with 3-4 inches of mulch. These materials block weeds for one full growing season while they decompose, adding organic matter to the soil rather than leaving behind a plastic barrier. This technique is particularly effective for smothering existing grass when converting lawn to garden beds — a common project across Fredericton and Moncton properties.

The one situation where landscape fabric makes sense in NB is under gravel or stone pathways and patios where you want permanent separation between the stone layer and the soil below. In these non-planted applications, fabric prevents gravel from sinking into NB's soft soils (especially the clay around the Saint John River valley) and keeps soil from migrating up into the stone layer. Use a heavy-duty woven geotextile fabric rated for ground separation, not the thin spun-bond fabric sold in garden centres — the heavier material lasts decades and handles the weight of foot traffic and frost movement.

For perennial garden beds and around shrubs, deep organic mulch remains the best approach for NB. Cedar mulch at $50-70 per cubic yard suppresses weeds effectively when maintained at 2-3 inches deep, improves soil as it decomposes, regulates soil temperature through NB's extreme seasonal swings, and can be easily refreshed each spring. The annual cost of mulch replacement is comparable to the one-time cost of fabric installation, and mulch provides ongoing soil health benefits that fabric never will. If weeds are a persistent problem despite adequate mulch depth, the issue is usually that the mulch layer has thinned below 2 inches or that a particularly aggressive perennial weed needs targeted removal before mulching.

---

Find a Landscaping Contractor

New Brunswick Landscaping connects you with experienced contractors through the https://newbrunswickconstructionnetwork.com:

• Urban Landscaping Ltd ✓
• Leger Steel Roofing ✓
• Curb Appeal Construction & Landscaping ✓