Durable and Affordable Pot for Small Plants and Seedlings Viagrow 2-gallon black nursery pots are measured in trade gallons, a standard term used in the horticultural industry for plant container sizes. One trade gallon is approximately equal to 0.71 U.S. liquid gallons. These black pots are BPA-free, food safe, and designed to be both affordable and durable. Perfect for various types of soil or hydroponic growing media, the round plastic nursery pots feature a raised rim design that allows for easy handling and stacking when not in use. They can be reused indefinitely. Specifications: Specification Details Top Diameter 9.5 inches Bottom Diameter 7.