STEP 4: Use 1/4-inch tubing to make ball on top. Wrap tubing around base of 24-inch pot to form a circle. Cut tubing, leaving a little excess. Bend ends back with pliers, creating a tab on each end of the circle. Repeat for second circle, making it slightly smaller than the first.
STEP 5: Put concrete-filled pot into 24-inch one, and fill with potting soil.
STEP 6: Place tabs on circles created in Step 4 into open end of 1-inch pipe. Use wire to connect point where circles cross.
STEP 7: Using a length of 1/4-inch copper tubing, place one end in 1/2-inch tubing wrapped around 1-inch pipe. Randomly wrap tubing around ball, and return other end to open end of 1/4-inch tubing. Repeat to complete the ball. For stability, bind tubing with copper wire where it crosses.
STEP 8: Plant vine, and weave onto form. Place seasonal annuals under topiary for year-round color.