Should You Really Stop Mowing Your Lawn in May? Experts Weigh In

Should You Really Stop Mowing Your Lawn in May?

There’s nothing like a sunny holiday weekend in May to make you want to dust off your lawnmower. But what if this year, you left it in the garage instead? Enter the “No Mow May” movement, a growing initiative with its own hashtag to boot. The idea? Let your lawn grow wild for a month to protect the biodiversity hiding among the blades of grass. Tempted? Let’s weigh the pros and cons.

Why Skip the Mowing?

The “No Mow May” movement isn’t just about saving you from a weekend chore — it’s spearheaded by the British NGO Plantlife. They argue that Victorian-style manicured lawns are so last century. By letting grass and wildflowers grow, you provide crucial food sources for bees, butterflies, and other pollinators whose numbers are unfortunately in free fall. These tiny creatures rely on the nectar from wild blooms that pop up when the mower gets a break.

To prove the point, a fascinating experiment took place at King’s College London in 2020. For the first time since 1772, a patch of their lawn — about half a football field in size — was left unmowed. Wildflower seeds were planted, echoing what would happen if you let daisies or dandelions take root in your yard. The result? Researchers found triple the number of plant, spider, and insect species compared to mowed areas. Even bats came to the party, making it clear that leaving your grass alone supports a rich ecosystem.

The Benefits Go Beyond Pollinators

It’s not just about more bees and butterflies. Letting grass grow comes with bonuses you might not have considered:

• Better harvests: Wildflowers and tall grass attract pollinators that directly benefit your garden. As the brand Stihl highlights, this helps with crops like apples, cherries, tomatoes, and beans by boosting pollination.
• Natural pest control: Towns like Nogent-sur-Oise in France showcase how biodiversity works in harmony. Birds, like chickadees, thrive in untamed yards, using worms and larvae for food, which in turn reduces pesky pests like aphids.
• Soil health: Taller plants shield the ground from drying out under the scorching sun and help rainwater absorb more effectively, thanks to their deeper roots. This creates a buffer against drought.

With such benefits, “No Mow May” has even inspired some unexpected allies: lawnmower brands. Stihl, for example, promotes the eco-friendly side of cutting back on mowing.

Do You Need to Commit Fully?

The short answer: no. We get it, not everyone wants to live in a jungle. Experts like Célia Jacob, who manages ecological projects in Nantes, suggest a middle ground. Instead of completely giving up the mower, try “differentiated management.” This means letting some areas grow wild while keeping others neatly trimmed. Think of it as creating mini meadows or “refuge zones” in your garden where butterflies, grasshoppers, and other critters can thrive.

And when you do mow, don’t go too short. Jacob recommends sticking to a height of at least 7 cm. It’s also worth rethinking how often you cut the grass, not just in May, but year-round. Less mowing means less water, electricity, or gas — perks that align nicely with rising costs.

Conclusion: A New Perspective on Lawn Care

The “No Mow May” movement isn’t about turning your backyard into a wilderness—it’s about offering a lifeline to species in need while saving you time, effort, and resources. Whether you embrace the whole movement or adapt it to fit your lifestyle, every small effort can make a difference. So, next time you spot wild grass growing in a public park or even your neighbor’s yard, don’t rush to judge. It might just be a sign of eco-friendly progress. Now, how about enjoying that extra free time this May while nature takes care of the rest?