Lawns across the UK have suffered from record-breaking summer temperatures, leaving grass parched and brittle. September offers the ideal window to restore your lawn, as milder conditions ease stress on grass while soil retains enough warmth for rapid seed germination.
Simply scattering seeds over bare patches is not enough, according to Monty Don, one of Britain's most respected gardening authorities. Struggling lawns typically have a build-up of dead material that can suffocate emerging grass.
Monty Don's Key Advice
Writing on his website, Monty explained: "If it is just a worn area of thin grass, rake away all thatch and moss and remove all weeds and thinly scatter grass seed, watering well and keeping it damp. The seed should germinate and grow in days."
Raking over distressed lawns is a horticultural technique known as scarifying, designed to create room for fresh grass growth. Many UK lawns have stopped growing entirely due to scorching heat, leaving gaps in patchy turf and allowing moss to establish itself.
Why Scarifying Helps
Moss competes with weakened grass for nutrients, hampering recovery, and this becomes a significant issue during wet autumn months. Dead grass builds up underneath the lawn, forming a dense layer called thatch, which blocks new seeds from penetrating the soil and stunts fresh growth.
Scarifying uses a rake to clear away moss and thatch while improving water penetration to the soil, helping grass roots develop robustly.
How to Scarify Your Lawn
The ideal time to scarify is the day after rainfall, when the soil is slightly damp—soft enough to rake through but not waterlogged. Mow the lawn first to access the thatch layer, but avoid trimming the grass too short, as this adds stress.
Draw a rake firmly across the grass, pulling it towards yourself with considerable pressure to reach the grass base. Rake in varying directions each time to dislodge overlooked material. Dispose of any moss or thatch in the bin, as leaving it in the garden can attract pests.
Water the lawn well and avoid mowing for at least a month after seeding. With proper care, the grass should appear fuller and more vibrant come autumn.
