I accidentally had fertiliser burn in small patches in my lawn. I haven’t been successful in getting it to grow back so should I just relay new turf in these small patches?
That looks like St Augustine or Buffalo grass which spreads by runners so it would eventually fill in but it is going to take forever with burns that deep. You are better off patching it but do not just throw sod on top of those spots. The soil right there is likely still loaded with salts from the fertilizer overdose which will just kill the new roots too.
Dig out the dead patches about three or four inches deep to remove that hot soil and fill it back in with fresh loam or compost. Flush the area hard with water to leach out any remaining salts before you drop the new pieces in. Cut your new turf slightly larger than the hole and stomp it in tight so the edges do not dry out.
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That looks like St Augustine or Buffalo grass which spreads by runners so it would eventually fill in but it is going to take forever with burns that deep. You are better off patching it but do not just throw sod on top of those spots. The soil right there is likely still loaded with salts from the fertilizer overdose which will just kill the new roots too.
Dig out the dead patches about three or four inches deep to remove that hot soil and fill it back in with fresh loam or compost. Flush the area hard with water to leach out any remaining salts before you drop the new pieces in. Cut your new turf slightly larger than the hole and stomp it in tight so the edges do not dry out.