I have a S. purpurea (not sure if it's ssp. venosa or ssp. purpurea) and I have been growing it outside. This is its 2nd winter with us. I originally got it from Lowes, and I quickly repotted it. It has been growing and pitchering nicely. Though, how old does it need to be to flower? And are there tricks to make it flower? (By the way, it catches lots of bugs, so I'm sure it has enough energy to make a flower.