Crabgrass in 10x10 Patch: Topsoil Won't Smother It

10x10 section, tiny crabgrass. Topsoil over it to kill + reseed? How many inches? Black plastic solarize then topsoil?

Topsoil Over Crabgrass = Fail

Crabgrass grows through. Worse: buries seed deeper for later.

Solarization = Weeks, Clear Plastic

Black plastic less effective. Needs 140°F for weeks. You want to plant now.

Only Real Fix

1. Remove physically or chemically.
2. Then resod/reseed.

No shortcuts. Kill it, then plant.