Right! but sometimes you can find these treasures by just walking around the garden with a few envelopes or paper lunch bags in your hand.
Yesterday I found:
Purple cluster bell flower going to seed.
And I brought in Maltese Cross seeds,
which I had bagged the seed heads as the seeds are tiny.
Hollyhock seed heads are still green, but I am watching them as they dry.
I picked some Hosta seed pods green, because the squirrels are taking them.
I am not sure that those will be any good?