Rolling   firm the ground. Therefore, if you've got a hard bump in the lawn it will still be a hard bump

You may be laying down sod, planting grass seed, or smoothing down molehills.

Lawn rollers are cylindrical “mini construction rollers” with added weight (usually water or sand) that help flatten the ground.

Roll your lawn in the spring when grass is just coming out of dormancy and the roots are in active growth.

While the soil should be moist before you roll the lawn, using a lawn roller on wet soils can increase soil compaction and decrease aeration.sh