Noxious weed

Not here; it's not a noxious weed here. But in Washington state in the USA,
apparently, they've declared this European/Asian plant a noxious weed. I
can see why, I think. This is growing out of a disused flower planter
that, two or three years ago, had a variety of what we thought were
annuals. But this plant has come up thick all over the planter. It's very
pretty close-up. Lamium galeobdolon is its name -- aluminum plant (for the
leaves variegation) and archangel plant (I don't know why) are two common
names. The flowers are tiny, just a cm long, and the leaves as wide and
about four cm long.