The Q&A Archives: How deep should the top soil be?
Question: We are starting over with new landscape shrubs and ground cover behind some retaining walls we installed. How deep should the top soil fill we will import be?
Answer: The required soil depth really depends upon what you plan to plant there; annuals need 6-8"; perennial flowers about 12"; small shrubs 12-18"; medium sized shrubs about 24". Best wishes with your new project!
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