If your lawn looks patchy, spongy, or covered in moss, a few simple gardening adjustments could transform its health. Moss is a common challenge in UK gardens, often flourishing in areas where grass struggles to take root.
While moss itself may seem like the problem, it usually signals underlying issues—especially poor soil conditions that favor moss over healthy grass growth.
Gardening expert Monty Don advises gardeners to focus on one key task to both remove moss and encourage lush, dense grass.
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“The best grass thrives in well-drained soil. Moss, for example, is always a symptom of poor drainage, made worse by shade,” Monty explains on his website.
Even the best soil can become compacted over time due to roots, rainfall, and regular foot traffic.
His solution? Aerate the lawn at least once a year by carefully inserting a garden fork into the ground and wiggling it around every six inches or so. This simple action alleviates soil compaction and opens channels for air and moisture to reach grass roots.
Moss thrives in waterlogged, compacted soil because these conditions prevent proper drainage. Compacted ground also stunts grass growth and increases susceptibility to disease, while blocking essential nutrients and sunlight.
After aerating, Monty recommends nourishing your lawn with a homemade mixture: equal parts sieved topsoil, sharp sand, and sieved leaf mould or compost. If those aren’t available, sharp or silver sand alone will suffice. Spread this blend over the punctured areas and brush it in with a stiff broom to fill the holes, thus improving drainage and feeding the grass naturally.
Using mulch not only enriches soil fertility but also helps prevent moss and weeds from taking hold.
Finally, rake your lawn with a wire rake to remove moss and thatch build-up, which can block light and water from reaching the roots.
Monty adds, “It’s worth giving the lawn a good scratch with a wire rake. This removes overwintering thatch and moss, letting light and water reach the soil and grass roots. Collect the debris for composting, then mow. The lawn may look sparse briefly but will grow back thicker than ever.”
By dedicating some time in spring to these simple tasks, gardeners can effectively eliminate moss and encourage stronger grass growth, resulting in a vibrant, healthy lawn.
For lawns where these techniques are insufficient, the use of Iron Sulphate may be effective. Lawn Pack specialists recommend this treatment as it quickly kills moss, turning it black and making it easier to remove. Apply it with a sprayer according to instructions, and within days moss will die back.