Environmental Issues
Volume
Elements and Compounds

How much dirt can a one gallon pot hold?

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Wiki User
February 03, 2010 12:30AM

A gallon.

Not really. While a pound of lead is the same as a pound of feathers, apparently the horticultural industry does not believe the same is true for gallons. One trade gallon is roughly .71 U.S. gallons. source http://en.wikipedia.org/wiki/Trade_gallon

But it can also vary by manufacturer. here is an excellent link explaining container sizes and volumes better than i can

http://forums2.gardenweb.com/forums/load/contain/msg071634112151.html