Soil Depth - Knowledgebase Question

San Francisco, CA
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Question by carmenerasm
January 10, 2006

We are doing a rooftop garden and have to be concerned about soil depth. Would it be possible to find out if these plants can grow in 8

Answer from NGA
January 10, 2006
Eight inches of soil really isn't deep enough to support the listed plants for any length of time. Rather than haul soil up to your rooftop garden, have you considered gardening in large containers? You can vary the sizes of containers, group them together and rearrange them at will, which will give your rooftop garden a different look at any given time. Eight inches of soil will support annual plants such as pansies, lobelia, and some bulbs, but not evergreen trees and shrubs.

Best wishes with your new garden!

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