Extracting a B. trifoliolata Bush

First I selected a moderately large bush with numerous stems at the base.

Next I removed the branches above c. 6 inches from the ground. This revealed 46 stems of various sizes/ages coming from the ground.

Bush with stems numbered in red (1 to 46). (To see the numbers) Distribution of the red numbers in the image to the left.
Detail of the area outlined in red above.

Then I dug a 1 foot ditch at a distance of c. 1 foot around the stems and then cut in from the sides to remove the bush. The thick main root below the lignotuber went directly down into the soil, very deep I assume. The roots were torn in the process revealing a deep orange color. [Compare the yellow stem cuts above.]

Roots covered with black clay. As much dirt as possible removed.

The remaining dirt was carefully washed away.

View from the top. View from the bottom.