Someone Please Solve this Mystery

josusa47 · June 2018

Don't think it's Hb. It usually has leaves in threes, growing in three different directions at the same point on the stem. Which is very unusual as most plants have single or paired leaves. But my philosophy is that if it grows and spreads like mad no matter what the conditions, it's probably a weed.

Valley Gardener · June 2018

That might explain why a "Buddlea" I bought from poundland,looks distinctly like a Spirea,having now had a name put to the same leaves!

B3 · June 2018

Perhaps the only way they can sell them is to call them buddleia

nutcutlet · June 2018

HB has squarish almost translucent stems with opposite leaves and is fleshy.
This looks like a shrub, possibly spiraea (I hate spiraeas) with oppositely placed leaves
Conclusion, not Himalayan Balsam

Silver surfer · June 2018

Agree not HB.....Impatiens glandulifera.

Image: https://us.v-cdn.net/6030279/uploads/editor/p5/uu2d3dusfroq.jpg

Image: https://us.v-cdn.net/6030279/uploads/editor/my/m3ac9r5xad0b.jpg

Hostafan1 · June 2018

Another vote for Spiraea Douglasii.
IMHO just as much a weed as Himalayan Balsam

Liriodendron · June 2018

And harder to get rid of... HB is easy to pull up, being an annual with shallow roots. Spiraea douglasii is a suckering shrub which will grow under walls and through tarmac if you let it. And Spiraea douglasii it is in your photos, IMO.