The message
from "Janice" contains these words:

"IntarsiaCo" wrote in message
...
Sow at 65-70F for 2-4 weeks, then 25-40F for 4-6 weeks, then 41-55F for
germination. Best with fresh seed.

Blimey, they're obviously not plants for beginners to sow, then! Oh well,
nothing ventured .....

You could sow half now and hope they survive the winter as small
seedlings, but if they don't you've got some left to sow in early
spring.
I think it's unlikely, though, that you'll get flowers next summer
either way. I had two seeds germinate last spring and neither is more
than three inches tall now. It seems to be a slow grower.

Janet G