On Sun, 29 Jun 2003 20:37:46 GMT, "jc" wrote:

Back before plastic containers, one gallon plants were sold in metal No.
10 cans which contained only 96 fluid ounces (3/4 gallon). When plastic
containers came into common use in about the mid 1960s, the pots were
tapered but the height and circumference at the top were the same as a
No. 10 can and the plants were the same size but the container volume
evn less than a No. 10 can but still occupied the same space in shipping
containers and continued to be called one gallon plants. I think it is
just common usage and the nursery industry would get confused if you
called it a 0.75 gallon can. Has anybody ever complained about the
liquid volume of a 10 gallon hat?

^_^ Perhaps plant containers are like lumber -- a 2x4 is what?
1.something" by 3.something"? As long as everyone agrees on the
*definition*, as opposed to the actual dimensions, the gazebo gets
built. However, pot sizing may be less familiar than wood
"measurements."