What is the best time of year to start a landscaping project in NB?

The best time to start a landscaping project in New Brunswick is late May through June for most types of work, though hardscaping projects can begin as early as mid-April once the ground has thawed and firmed up. NB's relatively short construction season — constrained by frost at both ends — means timing your project correctly is essential for both quality results and contractor availability.

Hardscaping projects (patios, retaining walls, walkways, driveways) can start earliest. Once the frost has left the ground and the soil has dried enough to support equipment — typically mid to late April in southern NB and early May in the north — hardscape construction can begin. In fact, spring is ideal for hardscaping because the work involves excavation and compaction that isn't affected by plant dormancy, and completing it early frees the site for planting later. NB's frost depth of 1.2-1.5 metres means proper base preparation for patios and walls requires digging to at least 18-24 inches, and this work is best done when the soil is fully thawed.

Planting projects should wait until after the last frost date for your area. That means mid-May in Saint John and the Bay of Fundy coast, late May around Fredericton, and early June in northern NB around Bathurst and Campbellton. Trees, shrubs, and perennials can go in as soon as the ground is workable and frost risk has passed, and the earlier in the season they're planted, the more root establishment time they get before winter. Annual flowers and tender plants should wait until night temperatures reliably stay above 5°C.

June is the sweet spot where everything comes together. The ground is fully thawed and dry, frost risk has passed across the entire province, nursery stock is at peak availability, and there's a full growing season ahead for plants to establish before winter. For major landscaping projects that combine hardscaping and planting, starting the hardscape component in May and transitioning to planting in June creates an efficient workflow.

Fall (September to mid-October) is an underrated alternative for many projects. Trees and shrubs planted in fall actually establish root systems better than spring plantings because soil is warm, air is cool, and fall rainfall is reliable. Perennial division and transplanting is ideal in September. Fall planting also avoids the summer heat stress that can challenge new plantings during NB's July-August hot spells. The main limitation of fall projects is the shorter window — you need to complete planting by mid-October to allow 4-6 weeks of root growth before the ground freezes.

Book your landscaper well in advance regardless of timing. NB's compressed construction season means the best companies fill their spring and summer schedules by March or April. Contact landscapers in January or February for spring projects, and by June for fall work. Expect project durations of 1-3 weeks for a typical residential landscape, though complex projects with hardscaping, grading, and extensive planting may take 4-6 weeks. Plan around NB's unpredictable spring weather by building schedule flexibility into your contract.

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