I grew them from seed last year from Thompson and Morgan via wintersowing method, sowed in March or April here in MN. They germinated quickly and robustly, grew huge, blossomed for about four months straight, and drew lots of comments from everyone who saw them in bloom. I can't recommend them enough.

The burpee simba's grow about 16-24" tall... The T&M were a yellow color, if I recall and were much taller... in the 36" range??? Please elaborate - how tall, what color (orange or yellow) and how did you use them?