Lawn care · 9 min read
Lawn Mowing Height Guide for London, Ontario
Ideal cutting heights for cool-season grasses in London, ON through spring, summer, and fall — plus weekly vs bi-weekly mowing and why edging matters.
London lawns are almost entirely cool-season grasses — Kentucky bluegrass, perennial ryegrass, and fescue blends that green up fast in spring and stay thick when mowed correctly. Cut too short and you invite weeds, heat stress, and bare patches by August. Cut too high without enough frequency and the lawn looks shaggy after rain. This guide matches mowing height and cadence to a typical London lot through the year.
Spring: wake-up cuts in April and May
After snow melt, start around 2.5–3 inches for the first few visits. Remove no more than one-third of the blade per cut — if the lawn went shaggy over winter, drop height gradually over two mows rather than scalping. Spring is when ruts from plows and salt edges show; pairing mowing with cleanup and edging makes the lot look finished faster than mowing alone.
Early summer peak growth
From late May through July, many London lots with sun and irrigation benefit from 2.75–3.25 inch cutting height. Fast-growing sections near downspouts or south-facing slopes may need weekly mowing while shaded back yards stay sharp on bi-weekly visits. Weekly service keeps clippings manageable; bi-weekly works when growth moderates and you accept a slightly longer blade between cuts.
Mid-summer heat and drought weeks
During hot, dry stretches, raising height toward 3.5 inches shades soil and reduces browning — but do not skip visits entirely or seed heads make the lawn look weedy. London Seasonal adjusts scheduling around rain; if you water, keep consistency so the crew is not fighting dust one week and swamp the next.
Fall: taper before dormancy
September mowing can stay at summer height while growth is still strong. By late October, gradually reduce toward 2.5 inches for the final cuts before snow — not buzz-cut short, which hurts crowns going into winter. Fall is also when leaf cleanup and bed edges matter for spring snow mold pressure against the house.
- Weekly mowing: best for irrigated, full-sun lawns and show-front properties.
- Bi-weekly mowing: fits most standard London lots with normal rainfall.
- One-time cuts: useful before listing a home or after vacation — not a substitute for season rhythm.
- Every visit should include cleanup and professional edging, not just a quick pass.
Why edging and cleanup matter as much as height
A lawn mowed at the perfect height still looks amateur if clippings sit on the walk and edges blur into the driveway. Edging defines the transition between turf, pavement, and beds — the detail neighbours notice. London Seasonal includes cut, cleanup, and edging on every lawn visit and pass, with weed control available as an optional add-on sized to your lot.
Looking for lawn mowing London Ontario, grass cutting London ON, or weekly lawn service London? Match height to season, pick weekly or bi-weekly based on sun and water, and book before May routes fill on the plans page.