try it and see...once the pod gets milked it shrivels and dies off. only way to get seed is leave the pods untouched.

btw, this is only a novelty kind of thing and unless one plants acres and acres of the stuff all you'll have is a few grams at any one time, at most. but the flowers are nice and for a couple weeks you'll have plenty of color as long as you mix your strains (there are far more than one p. somnif's).