5. Maintaining control
The best way to control your bamboo is through annual root pruning. Be sure to steer clear of air pockets or loose soil otherwise you might end up going deeper than you intended, maybe even going beneath the barrier.
After you place the barrier, be sure to compact the soil tightly when refilling the hole. A cheaper way of controlling the spread of bamboo could be to surround it with a 10-inch trench. The trench will ensure that the bamboo is contained and doesn’t spread all over your lawn.
Bear in mind that trenches aren’t a fool-proof solution, and bamboo will manage to spread across it at times.
If you want to ensure that your bamboo stays in its designated area, you can check on the trenches every fall and summer to see if your plants have made an attempt to cross the border.
If all else fails, make like Trump and build a wall; and be sure to make the bamboo pay for the wall.