Hi, Dianne. You're responding to a thread from way back in 2011. Since then, the database has undergone some important changes. For one thing, trade names are now distinguished from cultivar names. That's why our entry for Phasion is listed under Tropicanna as the trade name, but Phasion is included in the entry as the cultivar name. We've also added the also-sold-as lines, which serve nicely for cultivar names that followed the original name but were never trademarked.
Ideally, when there isn't a trade name, the original cultivar name should be the main name in the entry. In the case of cannas, however, there is no central registry and no comprehensive list of canna cultivar names, so it's difficult to find the original names. Various canna websites contradict one another, compounding the problem.
