Running bamboos are sometimes called `invasive` because they extend roots or `rhizomes` away from the main plant through the soil and emerge upward at a distance from the parent plant. The distance these `rhizome runners` can shoot is species-dependent. Running bamboos are great for locations where there is wide open space without the need to be cautious about where they might emerge. See also our `Rhizome Barrier` products to help contain running bamboos within your defined growing space.