Lawn Expert Warns: Avoid Early Spring Mowing to Prevent Grass Damage
As milder weather tempts gardeners to tidy up their lawns, a lawn expert is urging caution, advising against an early spring cut to protect grass health. Mowing too soon risks stressing the grass and hindering its growth, with potential damage lasting into summer.
The Risks of Premature Mowing
Cutting grass before it exits winter dormancy is likened to shocking someone awake with ice-cold water. Chris McIlroy from The Grass People emphasizes, "The lawn mower should stay in the shed for now. Grass should be actively growing when you mow, and that only happens when temperatures are above 8C to 10C consistently." Ignoring this can lead to several issues:
- Die-back: Freshly cut blades are vulnerable to frost, which can enter the cut ends, causing browning or yellowing and potentially killing grass plants.
- Soil compaction: Waterlogged soil from winter rains can be compacted by lawnmower weight, blocking oxygen and nutrients to roots and leaving unsightly indentations.
- Shallow roots: Early mowing diverts energy to blade repair rather than root development, making lawns less drought-resistant in summer.
- Moss and weeds: Bald patches from early or short cuts allow moss and weeds like dandelions to thrive, outcompeting grass for a lush lawn.
Timing and Tips for the First Cut
Experts suggest mid-March, around Friday the 13th, based on Met Office trends, for the first mow. Avoid cutting if frost is forecast within 24-48 hours or if the grass feels squelchy underfoot. McIlroy advises, "When you mow for the first time this year, ensure your mower blades are on the highest setting so you only trim the very top third of the grass. You can cut it shorter once you’ve seen how your lawn bounces back."
Preparing Your Garden in the Meantime
While waiting, gardeners can take steps to ready their outdoor spaces. McIlroy recommends clearing debris like twigs and leaves that block nutrients. Scarify the lawn with a spring tine rake, apply fertilizer to combat diseases, and plan for moss removal and reseeding bare patches. Aerating the soil with a garden fork every 15cm relieves compaction and improves drainage. Additionally, clean and sharpen mower blades for optimal performance.
For waterlogged lawns, tools like lawn aerators or aerator shoes can aid in soil health. These preparations help ensure a vibrant, resilient lawn as spring progresses.
