Gardeners across the UK face challenges from unpredictable weather when deciding when to resume mowing. Recent analysis of Met Office data from the past two years pinpoints mid-March 2026 as the prime time for the first lawn cut this year.
Key Temperature Threshold for Grass Growth
The Royal Horticultural Society notes that grass stops growing below 7°C. This aligns with weather patterns indicating sustained warmer conditions by mid-March, making it safe to start mowing.
Expert Advice on Timing
Nick Ee, product training manager at BLACK+DECKER, recommends mid-March as an optimal starting point. He advises: “While many factors influence the best time to mow a lawn in the UK, research points to mid-March.
“Always check local forecasts first, as weather shifts rapidly. Factors like rain, frost, and wind also affect the process, and spring ice remains a risk in Britain.”
Risks of Mowing in Poor Conditions
Cutting wet grass causes clumping, uneven results, mower clogs, and torn blades that invite disease. Moisture further risks rust on blades and deck buildup, shortening equipment life.
Avoid mowing during frost, freezing temperatures, or strong winds to protect both lawn and mower.
