So says the WSJ:
So Mr. Bothwell whacked the stand with a machete. It grew back. He bought a pickax and tried digging up the roots, a process that traced a 30-foot arc across his once-pristine lawn. One month and two broken shovels later, he rented a Bobcat minibulldozer and a big metal trash bin, acquired 14 gallons of poison and bought 24 cubic yards of dirt to fill the resulting hole. Total approximate cost: $1,500.
One year later, a single shoot appeared. "It gave me ... the final salute." Mr. Bothwell says. "I was like, 'Mother of God.' "