How deep should the top soil be? - Knowledgebase Question

Astoria, OR
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Question by george57
June 11, 2007
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 from NGA
June 11, 2007
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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