It's Late May in KW — Your Lawn Is About to Hit Its Stride

If you've been watching your lawn slowly wake up over the last few weeks, good news: the growing season is officially here. Environment Canada is showing sunny skies across Waterloo Region through early June, with highs climbing from 22°C now up toward 27°C by the end of the week and a UV index sitting at 8 — that's in the "very high" range. After a cool, slow spring, the grass is finally moving and this warm stretch is going to push growth quickly.

Here's what that means practically, and what you should be paying attention to right now.

Mowing Frequency Is About to Pick Up

In May, grass growth is gradual. Come June, it speeds up considerably as the soil warms and the days stay long. If you've been getting away with cutting every ten days or two weeks, that's likely about to change. During peak growing season in KW, most residential lawns need cutting roughly every seven days to stay healthy. Going longer than that and then cutting a lot at once stresses the grass and can leave it looking yellow or ragged.

The rule of thumb is to never remove more than a third of the blade in a single cut. If it got away from you, take it down gradually over a couple of sessions rather than one aggressive cut.

Watch the Mowing Height as Temperatures Rise

This warm stretch coming into June is beautiful, but it's also the point where cutting too short starts to cause real damage. A lawn scalped at 5 or 6 cm is going to struggle when we hit a heat wave. We keep our cut height higher through summer — it keeps the roots cooler, reduces moisture loss, and honestly the lawn just looks healthier and greener at a taller length.

Showers Are Coming — Use Them

The forecast is showing a chance of showers by Thursday and into the weekend. After a dry stretch, that's exactly what the lawn needs heading into summer. Deep, infrequent watering (whether from rain or a hose) encourages roots to grow down rather than staying shallow. Shallow roots are what make lawns go brown and crispy the minute we hit a dry week in July.

If you get a good soaking rain this week, let the lawn absorb it fully before the next watering rather than keeping the surface constantly wet.

The Short Version

Late May and early June in Kitchener-Waterloo is when lawns take off. Keep up with the mowing so it doesn't get away from you, resist the urge to cut short, and let the upcoming rain do its job. This is the window where a little consistency pays off all summer long.

If you'd rather hand it off and have it done right every time, that's what we're here for. Give us a call at 226-336-2077