Luis from Orlando, Fl writes
To be able to resod/reseed shortly after killing weeds and grasses in your lawn, the best product is a non-selective herbicide like Roundup Pro Concentrate. Roundup Pro Concentrate does not leach into the soil. It is recommended to wait atleast 2 weeks before removing the dead weeds and soil in the area and then filling those areas in with fresh soil before planting new seed or laying sod.
Answer last updated on: 04/30/2018