Patchy lawns are usually caused by compaction, thatch build-up, shade, or heavy wear. The fix depends on the cause. For most patches, overseeding in September with a light top dressing fills gaps within four to six weeks. For lawns with widespread thinning, a full renovation combining scarification, aeration, overseeding, and top dressing gives the best result.
ELawnCare offers lawn renovation across Cambridge at £200 per 100m². This includes scarification, overseeding, and top dressing. The work is carried out by the owner, who identifies the cause of the patchiness before treating it, rather than applying a one-size-fits-all approach.
Written by Evaldas, owner of ELawnCare. Last reviewed .
Three-step hand restoration: scarification with a rake, hollow-tine aeration, and premium overseed. Add topdressing if you supply topsoil.
Best in March–April or September–October · ≤50m² min £150 · >300m² in-person quote
Striped, healthy lawns with squared edges. From courtyard plots to country gardens.
+50% surcharge for overgrown first cuts
Compaction from foot traffic or heavy objects stops water and air reaching the roots. Thatch build-up, a layer of dead grass above the soil, prevents new seed from reaching the soil surface. Shade from trees or buildings weakens grass in specific areas. Dog urine creates circular brown patches. Moss outcompetes grass in damp, shaded, or compacted areas.
Identifying the cause matters because the treatment differs. Overseeding alone will not fix a compaction problem, and scarification alone will not fix shade damage.
Rake out dead grass and debris from the patch. Fork the soil to relieve compaction. Apply grass seed at the rate recommended on the packet, typically 30g to 50g per m². Cover lightly with soil or compost. Water and keep moist for two to three weeks. Avoid mowing until the new grass reaches 50mm.
Rake out dead material, fork the soil to relieve compaction, overseed at 30g to 50g per m², cover with a thin layer of compost, and keep moist for two to three weeks. September is the best time. For widespread patchiness, ELawnCare offers full lawn renovation at £200 per 100m².
Common causes are soil compaction, thatch build-up, shade, heavy wear, dog urine, or moss. The fix depends on the cause. Compaction needs aeration. Thatch needs scarification. Shade damage may need shade-tolerant seed. ELawnCare diagnoses the cause before recommending a treatment.
September is ideal. The soil is warm, autumn rain provides moisture, and there are weeks of growing conditions before winter. Early April is a backup option. Avoid summer, when heat and drought stress make it harder for new seed to establish.
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Owner handles every visit
Or book a free in-person visit for fencing and larger jobs.
