The fall clean-up decides what your lawn looks like in May

Leaves are not mulch. Left where they fall on a lawn in Ontario, a layer of wet maple leaves is the single most reliable way to turn a healthy lawn into a thin, grey, disease-prone one by April.

What happens under the snow

A leaf layer mats down with the first heavy rain, then freezes into a sheet. Under snow it holds moisture against the crown of every grass plant for months at a temperature just above freezing. That is precisely the environment snow mold needs.

The grass also gets no light. Turf is not fully dormant all winter — it photosynthesises on mild days. Under a mat it cannot, so it comes out of winter with nothing in reserve.

The one-visit myth

Mature maples and oaks in Thornhill, North York and older Vaughan streets drop over six to eight weeks, and never on schedule. A clean-up booked for the first week of November leaves half the canopy still to come.

A fall clean-up on a treed property is a series of visits, not a date. Newer subdivisions with young trees may genuinely only need one.

The last cut matters as much as the leaves

The final cut of the year should be shorter than your summer height — long grass mats under snow the same way leaves do. Not a scalp, just a step down at the end of the season.

Fall fertilizer is the best money you spend on turf

While the top growth slows, roots keep developing until the ground freezes. A fall application goes into root mass and carbohydrate storage, which is what actually determines how fast the lawn greens up and how well it holds through the following summer. If you only feed once a year, feed in fall.

Beds and the rest of the property

• Cut back perennials that turn to mush, leave those that hold seed for birds or structure for snow
• Clear leaves out of beds — the same mat problem applies to perennials
• Blow the downspout lines and drains clear so meltwater has somewhere to go
• Get the irrigation blown out before the first hard freeze
• Stake driveways and bed edges before the snow hides them

Everything on that list is cheap in November and expensive in May.

Book a fall clean-up