how thick does topsoil need to be for grass

Best answer


4 to 6 inches

People also ask


  • How much topsoil do you need to grow grass?

  • Whether you start a lawn from seeds or use a vegetative planting method such as sod or plugs, the soil conditions largely determine how well the grass grows. Seeds, sod and plugs all require at least 4 to 6 inches of good topsoil. does grass grow in 2 inches of soil? (Grass and weeds will grow through soil 2 or 3 inches thick quite easily.)

  • How thick does topsoil need to be?

  • Also, the layer of topsoil should be about 1/8 to inch thick. Anything less, or anything more is likely to hinder the level of success and the overall outcome you get.

  • Do you need topsoil to lay sod?

  • Shrub and tree roots penetrate deeper in soil. Grass roots, however, still need topsoil to grow effectively. Before you lay down grass sod or spread grass seed, establish a healthy layer of soil in which the sod or seeds can grow. Laying sod is an easier way than spreading grass seeds to get a thick, lush lawn over gravel.

  • What type of soil do I need to lay turf?

  • For best results, turf needs to be laid onto good quality, prepared topsoil at least 15cm (6 inches) deep. If the topsoil in your garden is either too shallow or is poor quality, it is wise to bring in more soil before you lay turf. The Turfonline team recommend either grade 1 screened topsoil or Enriched lawn soil to improve existing soil.

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