Plant id

[RoyKentFanclub]

Anyone know what this is? It’s around my pond and about a metre and a half tall. I don’t know whether it’s a weed or something I bought as a marginal plant (it can stay come what may)

Epilobium hirsutum..hairy willowherb.. spreads by rhizomes and seeds.. can be invasive.. be warned!

There will be hundreds of seedlings year on year. That's been my experience anyway.

Take the flower stems off before it seeds. It’s a lovely plant, well worth growing if you can control it. Its “official” common name is Great Willowherb, but the scientific names means Hairy Willowherb.