Jim, that's a useful link indeed. I am so used to Fahrenheit/Celsius conversion at a point I read indifferently both. But what drives me in the dark is something like 'plant it in a 3 gallon pot'. I have never understood how big is a 3 gallon pot and its diameter. Also British gallon is different from US one. If you need I can forward you a table with size of pot in cm and its volume in liters, as used in nursery trade here. Angelo