No Mow May? Why Smarter Lawn Care Helps Wildlife All Year Long

Why No Mow May doesn’t mean a month off for your mower – and what to do instead to create a biodiverse garden year-round 

As “No Mow May” sweeps the UK’s gardening calendar, many homeowners are letting lawns grow wild for a month to help wildlife. But while the campaign’s intention is positive, the reality is more complex. According to Peter Chaloner, Managing Director of Cobra, pausing mowing for just one month can actually stress lawns and undermine biodiversity. 

“No Mow May sounds good in theory, but in practice, it can be damaging. Long, unchecked grass growth followed by a severe cut in June can harm lawns and disrupt insect habitats. A more balanced, year-round approach lets nature and gardens thrive side by side.” 

Why “No Mow May” isn’t the whole story 

British lawns are often dominated by high-maintenance grasses, which quickly smother low-growing, pollinator-friendly plants like clover and selfheal when left uncut. An abrupt return to mowing in June can weaken grass and damage emerging wildlife. 

A smarter approach to biodiversity 

Cobra recommends selective, regular mowing to protect both plant and insect life: 

• Leave certain areas longer — edges, borders or wild patches — while keeping pathways neat. 
• Gradually lower cutting height after growth spurts to avoid shocking the grass. 
• Adjust blades to 7-10cm to allow flowering species to thrive while maintaining lawn health. 

For wildflower meadows, mowing is even more important. Starting with a short cut before May gives seeds a strong start, while regular mowing throughout the first year encourages deep roots and balanced growth. Seasonal cuts in spring, summer and autumn maintain both biodiversity and structure. 

Tools for sustainable lawn care 

Choosing the right equipment makes sustainable gardening easier. The Cobra MX3440V cordless lawnmower offers five adjustable heights (25–75mm) for flexible lawn management and for larger spaces, the Cobra LT62MRL Lawn Rider  

combines power and manoeuvrability — perfect for wildflower meadows and expansive lawns. 

Expert advice matters 

For gardeners unsure how to start, specialist garden machinery dealers offer more than just sales advice. These experts can recommend the right combination of mowers, scarifiers, aerators, and accessories to create lawns that are both healthy and wildlife-friendly — without sacrificing usability.  

Rethink your lawn for long-term biodiversity 

Pausing mowing for May is only the start. With thoughtful cutting routines, the right equipment and advice, every garden can become a wildlife-friendly, beautiful space. 

For more advice on sustainable lawn care and to explore Cobra’s full range of equipment, visit: www.cobragarden.co.uk. 

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Editors notes

The Cobra Garden range is constantly expanding and now consists of over 130 products to cover both domestic and professional requirements. Cobra incorporate a comprehensive range of petrol, electric and cordless lawnmowers, handheld machines and lawncare products.