Lay three poles on the ground. Mark the poles at 1, 2, 3 and 4 feet.
Drill holes through each of the poles at the measured intervals. You will drill 12 holes in all.
Lash the poles together by threading twine through the top set of holes.
Spread the poles out to form a standing tripod.
Thread twine through the next set of holes, making a circle around the entire tripod, to hold it stable. Thread twine through each set of holes down the length of the poles.
Dig a hole to bury each leg of the bean tower in a sunny spot in the garden. This offers added stability against harsh winds or visiting animals.