How to remove moss from your lawn, properly.

Treat before you rake

Ripping moss straight out with a rake or scarifier before treating it can actually spread the problem, moss releases spores when it's disturbed, and a fresh scarify without treatment first just gives those spores bare, open soil to land in.

A moss-killing lawn treatment applied first kills it off, so what you're raking out afterwards is dead material, not live spores looking for a new patch to colonise.

Scarifying, the actual removal step

Once the moss has blackened and died back, usually a week or two after treatment, it's time to scarify. A spring-tine rake works for a small lawn, a mechanical scarifier makes a much bigger job manageable.

Work in straight, slightly overlapping lines. For a lawn with heavy moss or thatch build-up, going over it a second time at right angles to the first pass gets noticeably more out.

• It will look worse before it looks better, a freshly scarified lawn can look thin and scratched up for a couple of weeks.
• Autumn (September to October) is the best window, the grass is still growing and can recover before winter.
• Spring is the second-best option if you missed autumn, avoid scarifying in a summer drought or hard winter frost.

Why the moss keeps coming back

Treating the symptom without the cause just means a repeat job next year. Moss thrives where grass struggles, usually shade, poor drainage or compacted soil.

Aerating compacted areas with a garden fork, improving drainage where water sits, and trimming back overhanging branches to let more light in all make it harder for moss to re-establish once it's gone.