Overseed unless the ground itself is the problem. Most lawns that look finished are recoverable, and the ones that are not are usually failing for a reason seed will not fix.
The first question: how much grass is left
Get down and look, rather than judging from standing height. A lawn that reads as “mostly moss” from above often has grass plants distributed through it, and those plants will spread once the moss is out and the surface is open.
If there is living grass across the area, even sparsely, scarify, overseed and feed. The lawn closes over a season.
If there are large contiguous areas of nothing — compacted paths, dead patches metres across, shade so deep that nothing has grown for years — then seed alone will not populate them.
The second question: is the ground the problem
This one matters more, because it decides whether starting again will work either.
If the lawn is failing because of compaction, drainage or deep shade, relaying it changes the surface and not the cause, and the new lawn fails the same way. Those faults have to be addressed first — aeration and top dressing for compaction, and for shade, either accepting a shade mixture or accepting that it is not a lawn.
If it is failing because of thatch, moss or neglect, those are surface conditions and overseeding after scarifying is the right answer.
What starting again actually involves
Killing or removing what is there, cultivating, levelling, firming, and then either sowing or laying turf — followed by weeks of watering. It is a fortnight of work and a season of care, against a weekend for the overseeding route.
How this site handles it
The seed, soil, fertiliser and aerator shelves here are the four the renovation route uses, and the pages print coverage and rates as the makers state them. Nothing on this site recommends a renovation for a lawn it has not seen; what the pages do is say what each product is for.
The questions that keep coming in
How bad does a lawn have to be before starting again?
Roughly, when there is not enough living grass left to spread into the gaps once the competition is removed. A lawn that is half moss and half grass recovers; one that is mostly bare compacted soil under a thin weed cover generally does not.
Is turf faster than seed?
Faster to look finished and slower to root properly, and it needs more water in the first weeks than seed does. It also costs several times as much for the same area.
Last reviewed 26 September 2026