This looks very much like Sparkleberry, it's in the blueberry family. It gets adorable bell-shaped white flowers in the spring. The leaves turn red in the fall. It gets pretty big, in fact it's the largest growing member of that family. We have it on our property. It's a good native for wildlife, however I understand the berries don't taste too good.

Thanks for all of the info, but it isn't burdock. The leaves are almost completely round, like a plate. Stems hollow, about the size of a cane pole. Grew in shady forest with no blooms.

Almost all seeds are dry, sort of hard, and black or brown when ripe. The pods or flower heads that grow the seeds will turn dry brown or straw-colored, and typically the seeds will be ready to fall out, shake out, float away, etc. This can take a long time - for example I collected butterflyweed seeds last november that were just getting ready to fly. By the way, the wild bergamot is very easy to transplant without really impacting the original plant. At the base of each plant will be small "rummers" (stolons, if you're a botanists) that form new stems in an expanding clump. You can separate a few stems and a couple of stolons (and some soil underneath - use a sharp shovel) from an established clump and transplant. Replace a little soil in the hole you left behind and the original plant will create new growth to replace what you have taken. By transplanting this summer you can have blooming plants nest year. Others such as butterflyweed and blazing start probably won't bloom from seed the first year, but also can't easily be divided or transplanted without destroying the original plant (and bettuerflyweed is really hard to move in my experience). Good Luck.

Sue Chemocurl started a similar instructional thread on the seed exchange years ago. She kept it going for a good long time, but she's not doing it any longer. If you want to try keeping it up that's great,but don't let it become a mundane burden. Human nature will cause people to disregard the rules no matter what. Some posters give great feedback from the get-go and some make a post thinking that they will check back on the results in 1,2,3,4, weeks. They usually always get the i.d.s they need, whether they gave good feedback or not, because of all you busy bees on here who love a challenge. Funny that some o.p.s only come to life when you i.d. something that they consider a threat to their well-being. Like the radically toxic Toxicodendron radicans.