Name Plant please

A little difficult to tell at this stage, but I would think it could be Rosebay Willowhurb if so it grows to about 150 cms. with pink flower spikes on the top. Flowers about June to September. They are about that height now in my garden, they blew in with the wind one year and I have kept a bunch of them eversince, quite pretty in the right place.

Looks like Himalayan Balsam (Impatiens glandulifera). Also known as: Policeman's helmet, Indian Touch-Me-Not, Ornamental Jewelweed, Pink Peril, Poor Man's Orchid. Very invasive, shoots seed all over the place.

If the stem is squarish, then I agree with Wagger.

This is a menace - it escaped into the waterways and is choking out the native plants. Don't let it flower/seed, will you!

I'd go with wagger on this too. you often get prop roots deveolping from the lower 6" of the stem too. The RHS has put them on the banned register. The good thing about them is they are great to pull up and they compost well too. I grow a deep pink one and regularly find the seed 6-12 ft away from where the parent grew. it is an annual by the way.

As spritz says it is a major problem in dampish areas and is out competing some of the british natives. some of the canals are really suffering .

Yes it could be Himalayan Balsam at least it flowers a month later than the Willowhurb if so do as they say, rid it well before it seeds.

Thanks folks for your help. Sounds like a weed growing in the wrong place to me. I think I will bin it. lol. - Sadie

Definately Himalayan Balsam - rip it up and destroy it ASAP. The stream edges in my garden were plastered in it when we moved in - and despite loving it as a child due to its explosive seed pods - I lothe it now as a gardener as it is far too vigourous.