Fall Yard Cleanup Checklist for Montreal: Prepare Your Property for Winter

In Montreal, the window between the last warm days of fall and the first hard freeze is short. What you do with your yard during that window has a direct impact on how your lawn, garden, and hardscaping come through the winter. A thorough fall cleanup protects your plants and prevents damage to walkways and patios. It also cuts down on the work you'll face in spring.

This checklist covers every major task, organized in the order you should tackle them.

Timing: When to Do Fall Cleanup in Montreal

Most fall cleanup in Montreal happens between late September and mid-November. The key milestones are:

• Late September to mid-October: Divide perennials, clean up garden beds, start leaf management.
• Mid-October to early November: Final lawn mowing, winterize irrigation, protect vulnerable plants.
• After the first hard frost (typically late October or November): Cut back perennials, apply winter mulch, shut down outdoor water.

Work around the weather rather than the calendar. If the ground freezes early, move tasks up. If fall stays mild, you have more time.

The Complete Fall Cleanup Checklist

Leaf Management

• Rake leaves from the lawn regularly throughout fall. A thick layer of wet leaves left on the grass over winter can smother the lawn and promote snow mould.
• Mulch thin layers of leaves directly into the lawn with a mower. Shredded leaves decompose over winter and add organic matter to the soil.
• Use whole or shredded leaves as mulch in garden beds to insulate plant roots. This is one of the most effective free winter protections available.
• Collect excess leaves in rigid, reusable containers (maximum 150 litres) for green waste pickup. Do not pile leaves on the street. Our leaf bag calculator helps you estimate how many bags you'll need. The City of Montreal prohibits placing dead leaves directly on the road (Ville de Montreal, Garden Waste and Dead Leaves).

Perennial Care

• Cut back perennials that have finished blooming and whose foliage has died. Leave 8 to 10 cm (3 to 4 inches) of stem above ground level.
• Leave ornamental grasses standing through the winter. Their foliage catches snow, which acts as insulation, and they add visual interest to the winter landscape. Cut them back in early spring before new growth emerges.
• Divide spring-blooming and early-summer perennials now. Peonies, hostas, irises, daylilies, and ornamental grasses all benefit from fall division (CAA-Quebec, Yards, Gardens, and Flower Beds: How to Prep for Winter).
• Do not cut back perennials that hold seeds for birds (coneflowers, black-eyed Susans, sedums) unless the plant shows signs of disease.
• Replace synthetic fertilizers with a thin layer of compost in garden beds. Our lawn fertilization guide covers what products are allowed under Montreal's pesticide ban. Compost feeds both the plants and the soil biology over winter.

Lawn Preparation

• Continue mowing as long as the grass is growing, gradually lowering the cutting height on the final mow.
• Set the mower to approximately 5 cm (2 inches) for the last cut of the season. Cutting shorter than usual reduces the risk of snow mould by limiting the amount of grass blade that gets matted under snow (CAA-Quebec).
• Pick up grass clippings from the final mow to avoid smothering the lawn.
• Overseed thin or bare areas in early fall (September) while the soil is still warm enough for germination. Late October is usually too late in Montreal.
• Aerate the lawn if the soil is compacted. Fall aeration allows air, water, and nutrients to penetrate the root zone before winter dormancy.
• Apply a thin topdressing of compost after aeration for additional organic matter.

Trees and Shrubs

• Prune dead, damaged, or crossing branches from trees and shrubs. Avoid heavy pruning of spring-blooming shrubs (lilacs, forsythia) in fall, as you will remove next year's flower buds.
• Wrap the trunks of young, thin-barked trees (maples, fruit trees) with tree wrap to prevent sunscald from winter sun reflecting off snow.
• Apply a 5 to 8 cm layer of mulch around the base of trees and shrubs, keeping it a few centimetres away from the trunk or stem. Mulch retains snow (which insulates roots) and protects against sudden temperature swings (CAA-Quebec).
• Install burlap screens around shrubs that are exposed to road salt spray or drying winter winds. Cedar hedges and boxwoods are particularly vulnerable.
• Remove stakes from trees that have been in the ground for more than one growing season.

Hardscape Inspection and Protection

• Inspect all walkways, patios, and retaining walls for loose or shifted pavers. Reseating them before winter prevents water from getting underneath and causing further heaving.
• Sweep polymeric sand back into paver joints if it has eroded. Properly filled joints prevent weed growth and stabilize the surface.
• Seal concrete surfaces if they have not been sealed in the past two to three years. Sealing reduces water absorption, which limits freeze-thaw damage and salt scaling.
• Check that all drainage paths are clear. Remove leaves and debris from French drains, catch basins, and downspout extensions.
• Confirm that grading around the foundation directs water away from the house.

Irrigation and Water

• Shut off and drain outdoor irrigation systems before the first hard freeze to prevent burst pipes.
• Disconnect and store garden hoses. Drain any water from hose bibs and, if possible, shut off the indoor valve that feeds exterior faucets.
• Drain and store rain barrels if they are not rated for freezing temperatures.

Outdoor Furniture and Equipment

• Clean, dry, and store or cover outdoor furniture.
• Drain fuel from lawnmowers or add fuel stabilizer if storing with fuel.
• Sharpen shovels and confirm you have adequate supplies of sand, grit, or safe de-icer for the winter ahead.
• Test outdoor lighting. Winter's shorter days make pathway and step lighting a safety essential.

Green Waste Disposal Reminders

Fall cleanup generates a large volume of organic debris. Here are Montreal's key rules:

• Branches: Maximum 5 cm diameter, tied in bundles with fibre rope.
• Containers: Rigid, reusable, with handles, maximum 150 litres.
• Collection schedule: Check your borough's specific dates using the Info-collectes tool at montreal.ca/en/services/collection-schedules.
• Items not accepted: Branches thicker than 5 cm, soil, and rocks must go to your local ecocentre.
• No street dumping: Raking leaves into the street is prohibited (Ville de Montreal, Garden Waste and Dead Leaves).

The Payoff: Why Fall Cleanup Matters

A well-prepared yard enters winter dormancy in the best possible condition. Lawns that are mowed short and cleared of debris are far less likely to develop snow mould, and perennials that are divided and mulched have better survival rates. On the hardscaping side, fixing loose pavers and sealing concrete before the first freeze prevents the kind of water infiltration damage that gets worse with every freeze-thaw cycle.

Spring cleanup is dramatically easier on a yard that was properly put to bed in the fall.

Need Help?

If your property needs more than routine cleanup, whether it is a retaining wall that shifted, a walkway with drainage problems, or a patio that has seen better days, fall is a good time to plan the work. Call Montreal Paysagement Pro at 514-900-3867 to discuss your project before the ground freezes.

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Sources:

• CAA-Quebec, Yards, Gardens, and Flower Beds: How to Prep for Winter
• Ville de Montreal, Garden Waste and Dead Leaves
• Ville de Montreal, Collection Schedules
• Gouvernement du Quebec, Yard and Houseplant Maintenance
• Old Farmer's Almanac, Gardening Tasks by Month for Montreal