Cow pots are the invention of the Freund brothers who are dairy farmers in the northwest hills of Connecticut. Made of dried, composted cow manure that fully decomposes with no waste or odor. It promotes robust root growth while avoiding stress on the plants and they also attract worms. The pots can withstand months in the greenhouse, and within 4 weeks of being planted they dissolve and continue to feed the plants. This great product not only contributes to the plants but also adds to a cleaner environment where consumers have no plastic to discard and overload our landfills. We find these pots are ideal for tomatoes. 4 in in diameter with a 2-1/2 in base and 3-3/4 in high.