They are 18" across and 5" deep. This measurement is across the top so the actual bowl is probably 17" as there is a rim. There is another one that is about as deep but not quite as big around. I didn't measure it. I use mine for my lilies. I've never had lotus so i don't know the requirements for them. You have to get them at the 99 cent store, not Dollar General/Family Dollar/etc. Anyway, that's the only one of the dollar store where I have found them. The bigger ones are 1.99 and the smaller are .99. They have a veggie or flower decal on the bottom of the inside and here they come in gray, green, rust & blue.