On 9 Jul 08, at 12:10, J.E. Shields wrote: > . . . in plastic pots (1/2-gal. = 5.5 in. sq. X 6 in. deep; 1-gal. round > black plastic; 2-gal. round black plastic = 22 cm diameter X 22 cm deep). The volumes stated are nominal. The calculated volumes are: 5.5×5.5×6" 3 liters (0.8 US gallon) "1 gallon" if it's the same as we call by that name here, round, typically 153 mm top diameter, 135 mm bottom diameter, 175 mm height 2.9 liters (0.8 US gallon) "2-gallon" 8.4 liters (2.2 US gallon) The pot usually called 2-gallon here is typically 198 mm top diameter, 170 mm bottom diameter, and 211 mm height, with volume of 5.6 liters, 1.5 US gallons. May I put in a plea for consistently using metric measurements of pots instead of a dog's breakfast of various units and nominal sizes? The subscribers to the PBS mailing list come from all over the globe and outside the US, sizes in inches and gallons do not communicate meaning efficiently. I've been gradually measuring the various sizes & brands of pots I use and calculating their volumes. Many of the actual volumes are a good 30% less than the nominal volume; enough to be a pain if you are trying to figure out how much soil to mix in order to fill them. -- Rodger Whitlock Victoria, British Columbia, Canada Maritime Zone 8, a cool Mediterranean climate on beautiful Vancouver Island