WEED is everywhere, roots extend everywhere!
I believe it came with the plants the builder installed during the new construction.
In one small isolated corner area buy the driveway at the corner of the house, I dug throughout the bed and eventually into the shrubs root ball as it kept coming back from there.
After several attempts, spending 1/2 the day digging and tracking roots, I got it all and it was everywhere.
By the front of the house though the battle is not going as well.
It seems as if the roots are a netting throughout the entire area and it even got under the brick border and started to intrude into the lawn. I did get it all out of the lawn, but the flower bed with the (required number of bushes) is horrible!
I can't dig anywhere in the flower bed without hitting some of it's roots.
The roots seem to grow no deeper than 6 inches, but then spread out in every direction.
I has yet to reach under the sidewalk to the other side.
The pictures I have are of the little shoots that come up, but the mature plant can get 3 to 4 feet or possibly higher.