There's no doubt about it, though: running bamboo can take over an area if left to its own devices. The drain pipe in (figure D) has been cracked and disfigured by super strong bamboo roots. If you're putting in a new planting of a running bamboo and you want to keep its growth in check, dig a two-foot (minimum) trench around the planting area, and install a barrier of 30-mm plastic. It's like planting bamboo in its own pot. Make sure you dig the trench before planting; in an established stand, the roots and rhizomes are extremely difficult to cut. The minimum depth for a trench is two feet, and digging it is a task you'll want to complete before you plant. Once a stand of bamboo is established, the rhizomes and roots are extremely tough and difficult to cut. Because bamboo's amazingly thick mass of roots bind the soil so effectively, these plants are terrific for controlling erosion on steep slopes or hillsides.
Bamboos are bothered by relatively few insect pests. In the South aphids may be a problem, and gardeners on the West Coast and in the Pacific Northwest may detect bamboo mites. Both are easy to control with a strong blast of water from the hose or with applications of horticultural oil.
If you take care of your bamboo, you'll be rewarded for years to come. Most plants mature in 60 to 120 years, then flower and die.
Keep in mind that bamboo offers yet another bonus in the form of wood, which grows much faster than that of regular trees. Bamboo lumber may be used to build all kinds of neat structures.