A lawn roller is a handy landscaping tool to compact soil before planting turf or grass seeds. Empty lawn roller drums work well on sandy, light soils; however, if you have a dense soil with clay, adding weight in the roller is handy and makes the job of leveling ground much easier. Level lawns do not have hills that remain dry or valleys that remain too damp and are subject to fungal diseases. Filling a lawn roller with concrete takes little time, and you can stripe your lawn in two directions, like a ball field.
Turn your lawn roller on its side with the drain hole facing upward. Place bricks on two sides of the lawn roller to keep it stationary.
Pull the drain plug out of the drain hole. If it is stuck in place, you may need to use a pair of needle-nose pliers for a tight grip on the plug. Set the plug aside.
Pour concrete mix into a wheelbarrow. Add the amount of water needed as to the package instructions with a garden hose. Mix the concrete and water with a garden hoe until it is evenly consistent with no dry or wet areas.
Place a funnel into the drain hole of the lawn roller. Scoop concrete mix with a coffee can out of the wheelbarrow and deposit it into the funnel until the roller is full.
Allow the concrete mix to cure and dry. Add additional concrete mix to top it off if there is considerable shrinkage when it is dry.
Replace the drain plug into the drain hole. Remove the bricks and turn the lawn roller upright. You may need a helper to turn the lawn roller over depending on the size of the drum and the weight of the concrete.