Edging is mainly a choice about how you want your lawn to look. We do not have peer-reviewed evidence here that a particular edge shape improves lawn health.
Keep the evidence in its lane
The mowing trial in tall fescue and buffalograss found poorer quality after large canopy removal. It did not test string trimmers or edging techniques. Avoiding an abrupt, very low cut at the perimeter is a cautious extension of that finding, not a tested edging result.
Carlson, Keck & Kreuser, 2025Choose a boundary you can maintain
Pick the visual boundary you want between turf and a path or bed. For this design task, there is no scientific “best” shape presented here. The goal is a repeatable finish that fits your equipment and time.
Your next steps
Cautious applications link to their research. Practical checks cover records, safety, or local advice, not tested treatments.
- Practical checkWalk the boundary and identify irrigation hardware or other obstacles.
- Practical checkFollow the tool manufacturer's instructions and required protective equipment. Turf studies are not tool-safety instructions.
- Cautious applicationAvoid treating a very low perimeter cut as a lawn-health improvement. Mowing evidence about canopy removal is only indirect evidence for trimming.Carlson, Keck & Kreuser, 2025
- Practical checkStop if the ground or equipment conditions make the job unsafe.
What this guide cannot tell you
This is a practical checklist, not a peer-reviewed comparison of edging methods. Tool safety comes from the manufacturer’s directions, not from turf-growth studies.
Read the research
These are peer-reviewed studies. Study settings and limits matter when applying a finding at home.
Two-year field study · Nebraska · lawn-height turf
Transfer limit. Spyder tall fescue and Sundancer buffalograss on irrigated university plots. Results do not establish one mowing height or interval for every species or climate.
Checked: Full text. Read the source audit