Last year I had an unidentified weed in my garden, and am looking any bright
ideas as to what it is. No photo thou.

It looks like its in the nettle family, with very long spreading stems, that
as soon as they touch the ground they start rooting.
The flowers are pinky colour with the flower head being very nastely spikey.
The stems are also spikey. The seeds are in a nutlet group of 4.

What is it ??.
I thought it might be Large Flowered Hemp Nettle, but its flowers are all
pinky/purpley