Viagrow VHPP500-10 5 gallon Round Nursery Pot, 10 Pack Inexpensive and durable Can be used with various types of soil or hydroponic growing Media Raised rim design allows easy handling and easy stack ability &quot;A trade gallon is a unit of size for standard plant containers in the horticultural industries. A trade gallon is equal to approximately .71 U.S. liquid gallons.&quot;