Recovering a Lawn Killed by 2,4-D and Clover Killer

Chemicals Kill Soil Life

A Michigan homeowner’s husband applied 2,4-D and chickweed/clover killer, killing 60% of a half-acre lawn. The respondent explains that chemicals kill soil microbes, so sugar (which feeds microbes) won’t work until chemicals leach out. If it’s been 3+ weeks with rain, leaching may be complete; flood the area to be sure.

Sod vs. Seed

June is not dormancy time in Michigan—grass should be growing. The extension office may be wrong. Sod can be laid now: prepare soil, lay pieces tightly, fill gaps with soil, top-dress ½ inch, keep moist until rooted. If soil is clean, start organic program (sugar, alfalfa meal, lava sand) for rapid establishment.