What type of mulch is best for New Brunswick gardens?

Cedar mulch is generally the best all-around choice for New Brunswick gardens, offering excellent longevity, natural pest resistance, and an attractive reddish-brown colour that holds well through Maritime rain and humidity. At $50 to $70 per cubic yard delivered in the Moncton and Fredericton areas, cedar costs slightly more than hardwood mulch but lasts 2-3 seasons compared to hardwood's single season, making it more cost-effective over time.

For New Brunswick's specific climate conditions, mulch serves several critical purposes beyond aesthetics. It insulates soil against NB's dramatic temperature swings — from -30°C winter lows to 30°C summer highs — protecting root systems from frost heaving and reducing summer moisture evaporation. With NB's acidic soils (pH 4.5-6.0), most organic mulches actually help by slowly decomposing and adding organic matter, though they can slightly lower pH further. If your soil is already very acidic, consider using hardwood mulch instead of cedar, as hardwood breaks down into a more neutral amendment.

Apply mulch 2 to 3 inches deep for flower beds and around shrubs, refreshing annually in late spring after the soil has warmed. A common New Brunswick mistake is piling mulch too deep or creating "mulch volcanoes" around tree trunks — keep mulch 3-4 inches away from tree bark and 1-2 inches from perennial crowns to prevent rot and rodent damage. For a typical NB residential property, budget 5-10 cubic yards for full bed coverage, which translates to roughly $250-500 for materials depending on the mulch type.

Hemlock bark mulch is another excellent option for NB, prized for its dark, rich colour that complements the Maritime landscape aesthetic. It is particularly popular in Saint John and Fredericton garden centres at $45-65 per yard. For vegetable gardens, straw or untreated hardwood mulch are preferred since they decompose more quickly and will not tie up nitrogen as aggressively as fresh cedar chips.

One important note for NB gardeners: avoid applying mulch too early in spring. Wait until the soil has thawed and warmed to at least 10°C, typically mid to late May in most of the province. Mulching over cold soil traps that cold in and delays plant emergence. In fall, add an extra inch or two over perennial beds after the ground starts to freeze for winter insulation, which is especially important in NB's zone 3b-4a areas inland where winter temperatures regularly hit -30°C.

---

Find a Landscaping Contractor

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

• Leger Steel Roofing ✓
• Lawrence Landscaping ✓
• Hickory Dickory Decks Moncton ✓