Last summer, I dug out root cuttings from a red oriental poppy that I grew in Vancouver. I waited for the leaves to go dormant, crinkly brown, which they do in mid summer. Then I dug out as much as I could, basically a foot long root. The main root goes much deeper, and that plant grows back from the deeper root. The dry, brown roots look like dead sticks. I planted them around my Battleground vegetable garden. Every cutting grew and bloomed. Over a few years, they make a nice clump.
This is a nice way to get free starts of this beautiful oriental poppy, if you know someone who has a few plants. It's much nicer than buying a potted plant from that orange home improvement store.