A trade gallon is a unit of volume for standard plant containers in the horticultural industries. It equals 3 US liquid quarts or 0.75 US gallons (2.8 L; 0.62 imp gal),[1][2][3] although some sources state that a trade gallon equals 2.7 litres (0.71 US gal).[4]

Notably, 10 trade gallons equals 30 US quarts, which in turn equals 1.0 cubic foot, a common unit of measurement for soil.


  1. ^ Glenn, J.S.; Gilliam, C.H.; Edwards, J.H.; Keever, G.J.; Knight, P.R. (December 2000). "Recycled Waste Paper Mulch Reduces Available Container N". J. Environ. Hort. 18: 188–191.
  2. ^ Avent, Tony (2003). So You Want to Start a Nursery. Timber Press. p. 123. ISBN 9780881925845. trade gallon.
  3. ^ Morgan, Dr. David L. "Container Mania: Why Sizes Differ and What to Look For". Learn2Grow. Retrieved 31 March 2017.
  4. ^ Tertuliano, M.; Srinivasan, R.; Scherm, H. (February 2012). "Settling behavior of the glassy-winged sharpshooter, Homalodisca vitripennis, vector of Xylella fastidiosa, on southern highbush blueberry cultivars". Entomologia Experimentalis et Applicata. 143: 67–73. doi:10.1111/j.1570-7458.2012.01228.x. S2CID 86762034.