It should be a perennial, Marty11--no reseeding necessary. Mine never produces flowers, much less seeds, but they come up every year anyway.
So you should be okay sharing seeds. Or just save one of the seed pods and give the rest away.
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."