Might be easier to dig up and divide
make sure the thread doesn't get lost
Could you create a plant umbrella?
With your umbrella
This can be a problem, I've lost seed that way. Picking them before they're ripe won't give you viable seed though
I'm in agreement with Leycesteria formosa for the first one
Seeds do need to ripen on the plant before you harvest and dry them Jo.
If they're upright the seed will sit there for a while before it drops or you could put it's head in a paper bag
I looks like one of the eupatoriums.
But that isn't a definite ID
Buy from nurseries, the people that grow things.Forget the rest
I like GeeTee, the only disappointment has been the freeby Jetfires, some were soft and mouldy