Hi Josephine, so glad you're here! By seed! But for a few years I had only one plant (dug up elsewhere and planted) and no volunteers at all! When I gathered seeds from another location and planted seeds, THEN plants came up. Maybe no viable seeds from just one or two plants? There were no other Woolly Ironweed plants in my local area then. I'd be glad to send you some seeds later on...I've got plenty of those plants now!
