Carpet of green-yellow moss across the lawn
Likely cause
Compaction, shade, poor drainage, infrequent mowing — moss thrives where grass struggles.
Chemical-free fix
Scarify (rake out) the moss in spring or autumn. Aerate compacted areas with a fork or hollow-tine aerator. Top-dress with sandy compost in shady patches. Overseed with a shade-tolerant grass mix. Repeat annually.