What flowers should I plant in my window garden?

[thehobbster]

I want to convert this to one long trough so they all share the same soil, but I'm worried about them choking each other out or not all being perrenial. You guys have any suggestions?

 

[Clarkey]

Nothing better than a good bunch of thick and solid stems.

 

[m0rtal]

Any one of these will do!