Knowledgebase
grass plugging #946574
Asked October 06, 2026, 9:00 AM EDT
Shiawassee County Michigan
Expert Response
https://extension.okstate.edu/fact-sheets/print-publications/pss/planting-on-septic-system-drain-fields-a.pdf
https://www.extension.umd.edu/resource/planting-over-your-septic-drain-field/
Native Plants Over Drain Fields-MSU
The consistent answer is to plant short-rooted plants. Turfgrass qualifies as roots usually don't exceed 6" depth. If you wish to plant plugs you'll need grass species that spread by rhizomes allowing it to fill in thin areas of turf and to make recovery from injury. Kentucky Bluegrass and Red Fescue qualify. You might purchase some sod, cut it up and plant the plugs (or just sod the area). More turfgrass specie info in the attached links:
Turfgrass species ID & Cultivar Selection (E2912)-MSU - checkout KBG and Red Fescue
Turfgrass Species for Pennsylvania-PSU
https://extension.illinois.edu/lawns/preparing-your-lawn
Info on lawn renovation:
Renovating A Lawn for Quality & sustainability-UMN
Renovation of Lawns-PSU
Be sure to work a starter fertilizer into the top 2"-3" of soil and irrigate regularly. I'd get this done quickly as the optimum window for grass establishment in the fall is passing.