They can take over large areas, some varieties spreading more than 100 feet from the mother plant in an incredibly short amount of time.
Also each runner should be cut off from the mother plant.
Much depends on the mother plant and what kind of trimming it may need.
I've seen the mother plant around here, I just didn't know what it was at the time.
Some of them might enable her to pass the mother plant.
Up to 400 suckers can be produced from just one mother plant.
But one thing is sure: the young will look exactly like the mother plant in color of flower and form.
"You can't take out the mother plant without disrupting the whole network."
This will be the signal to sever them from the mother plant.
This explains why some plants appear here when the mother plant may be yards away.