What Worked This Summer: Lawn Lessons from a UK Heatwave

After a summer that tested every lawn in the country, here are the lawn care tips UK summer gardeners actually found useful this year – no theory, just what worked.

Every scorching summer teaches you something new about your garden, whether you asked for the lesson or not. After a season of heat, hosepipe bans, and a lawn that spent most of July looking distinctly unimpressed, here’s what actually made a difference this year — and what’s going straight into next year’s plan too.

Leave the grass longer

The single easiest change that helped: raising the mower height and simply not cutting the lawn as short. Longer grass shades its own roots and soil, holding onto moisture far better than a lawn scalped down to the bone. If you only make one change based on this article, make it this one.

Feed it right — and choose granular over quick-release

Nitrogen-based fertiliser kept the lawn ticking over through the stress of summer, but the real lesson was in which type to use. Granular fertiliser won out over other options specifically because of its slow-release properties — rather than a quick burst that the grass can’t fully use (or that washes away before it does much good), granular feed breaks down gradually, giving the lawn a steadier supply exactly when it needs it most.

Scarify early

Getting scarifying done early in the season — before the worst of the heat set in — made a noticeable difference. It clears out the thatch and moss that would otherwise compete with the grass for water and nutrients, giving the lawn a cleaner start before the dry months arrive.

Don’t mow too low

A close cousin of “leave the grass longer,” but worth its own mention: consistently avoiding a low mow height through the season meant the lawn had more leaf surface to work with, and more shade protecting its own roots.

A genuinely useful bit of kit: the step-on weed tool

If there’s one tool that’s earned its place in the shed this year, it’s a long-handled, step-on weed puller — the kind you push into the ground with your foot to pull dandelions and other weeds out from the base, roots and all. It’s a satisfyingly efficient way to deal with weeds without bending down every two minutes, and it gets the whole root out rather than just snapping off the top.

The trick that makes it even better: carry a small tub of topsoil mixed with grass seed in your pocket as you go. Every time you pull a weed, you’re left with a small bare patch — fill it straight away with a pinch of the soil-and-seed mix, and you’re overseeding as you weed, with almost no extra effort.

What’s changing for next summer

Mostly, more of the same — the routine above worked, so it’s staying. But there’s one addition already planned: setting up a proper rainwater harvesting system, so watering doesn’t have to stop the moment a hosepipe ban comes in. A lawn under drought stress still needs water somewhere, and relying on mains supply alone isn’t realistic once restrictions hit. Catching and storing rainwater in advance means there’s something to fall back on exactly when it’s needed most — check out our water butt buying guide for tips on getting started.

The bottom line

None of this is complicated — longer grass, the right fertiliser, early scarifying, and a decent weeding tool did more for this lawn than anything else this summer. Simple, consistent habits beat any single miracle fix, and next year’s plan is really just this year’s, with a rainwater system added in for when the taps get restricted.