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Wed, Jul 25, 12 at 20:08
| We recently bought a house where a 10' x 10' corner of the yard is covered with crushed granite. It's about 2" deep.
I'd like to replace the crushed granite with St. Augustine, so it'll match the rest of the yard. Do I need to remove all of the crushed granite first? Or can I throw some dirt on top and then lay the sod... or just lay the sod directly over it? |
Follow-Up Postings:
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| What is the size of the granite pieces? Anything bigger than coarse sand will probably not hold enough water or nutrients to support a healthy lawn. I would remove it and replace it with the appropriate soil if the pieces are too big. |
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- Posted by ApprenticeGardener 7 (My Page) on Thu, Jul 26, 12 at 13:41
| Get rid of the granite, regardless of the size of the pieces. Granite is not a planting medium. Best wishes--Carl |
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- Posted by dchall_san_antonio 8 San Antonio (My Page) on Sat, Jul 28, 12 at 2:16
| Actually decomposed granite is not a bad medium for several reasons, but in this case, it probably is not great. Decomposed granite tends to lock together forming a very stable surface. I'm thinking that locked together soil would be hard for roots to penetrate. Also the sharp edges of the granite would be a hazardous place for tender roots to grow. Granite makes a better topdressing or sand substitute than a growing medium - at least for grass. I would set the granite aside and scatter it over the entire yard after you finish with this little section. |
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