If you want any kind of information on growing DAHLIAS, go to the message "Dahlias in pots" below posted by "prowdgm" and click on it. Go to the 6th message to the posting by

"poochella" and at the bottom of his message you will find a reference to "ADS article on growing dahlias in pots". Read this article, download, and print this article. This is the clearest article I have ever read, and it comes from a source that is unimpeachable, authentic, clear, and to the point. It has the answers to every conceivable question. GOOD LUCK, and ENJOY !