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Red potting soil, and very light stones. What are these? (pics)

 
adrian dwor
Posts: 13
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Hello,

Does anyone know what these are?

The stones are very light. The whole bucket of them weighs almost nothing.

The other picture is red potting soil. It's probably too vague to determine exactly.

Both come from a flower shop dumpster.

Thanks a lot
-- Adrian



http://s27.postimg.org/j7ng5vhqb/P6213889.jpg
 
Michael Cox
Posts: 1592
Location: Kent, UK - Zone 8
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They are known as expanded clay - essentially a man made porous rock. Good for soil aeration and water retention.
 
Jd Gonzalez
Posts: 207
Location: Virginia,USA zone 6
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forest garden greening the desert hunting trees
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Red potting soil? Is it fluffy? If so it could be, peat moss,cocoa duff or coconut coir.By the color and texture it looks like coconut coir.
 
Cristo Balete
Posts: 428
Location: In the woods, West Coast USA
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Adrian, Michael is right. Here's a picture of fresh ones you can buy. They seem pretty valuable.

http://www.htgsupply.com/Product-Plant!t-Expanded-Clay-Pellets---10L#
 
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