Canna Lily - Canna x generalis - update

I originally wrote that my canna lilies weren't doing very well. But apparently I was wrong, since one of them has now grown a beautiful flower.

Canna Lily - Canna x generalis

These are native to tropical and subtropical regions of North and South America. Their name is something of a misnomer since they're not actually lilies, but they are related to them.

These plants are a little unhappy, living at my place. When they're outdoors, it's not hot enough, and when they're indoors, they're getting a good amount of sun but still not as much as they probably need. I'm hopeful that they'll survive, but if worst comes to worst I'll kill them off and eat their rhizomes, which are apparently a great source of starch and are even grown for agricultural purposes! So it's a win-win situation (for me, not for my plants).

Phylum/division: Magnoliophyta
Class: Liliopsida (considered synonymous or nearly synonymous with monocotyledons - need to clarify what "nearly synonymous" means)
Order: Zingiberales (another great name)
Family: Cannaceae
Genus: Canna (the only genus in the Cannaceae family)
Species: C. x generalis