Very true Nutcutlet and that one also has a variety with lovely dark red/ brown foliage: E. rug. 'Chocolate'. Looks gorgeous combined with Echinaceas and ornamental grasses!
It is Eupatorium cannabinum as has been said, I think it's worth noting that it's the best native plant for butterflies and other pollinating insects. I've only had it in my garden for three years but I've not yet had any problem with it spreading vegetatively, nor by seed. In fact I've divided all of mine this year to spread it. Though it isn't in a bog garden or by a pond. I suppose it will eventually seed itself but not yet despite me shaking it around the garden like some kind of shaman. It's been grown for centuries in gardens and is a favourite for herbaceous borders.
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E. rugosum - in 2 wheel's link - is quite well behaved and very white. Doesn't look much like the one in the pic though.
In the sticks near Peterborough
Very true Nutcutlet and that one also has a variety with lovely dark red/ brown foliage: E. rug. 'Chocolate'. Looks gorgeous combined with Echinaceas and ornamental grasses!
Thanks Flowerchild I've been trying to pin down which one it was.
UW
It is Eupatorium cannabinum as has been said, I think it's worth noting that it's the best native plant for butterflies and other pollinating insects. I've only had it in my garden for three years but I've not yet had any problem with it spreading vegetatively, nor by seed. In fact I've divided all of mine this year to spread it. Though it isn't in a bog garden or by a pond. I suppose it will eventually seed itself but not yet despite me shaking it around the garden like some kind of shaman. It's been grown for centuries in gardens and is a favourite for herbaceous borders.