Place gravel in the bottom of an urn to help stabilize the completed topiary tree and provide a drainage system. Fill the urn with potting soil. Plant the English ivy in the soil.
Cut a 10-foot length of 20-gauge wire in half. Bend each piece of wire in half.
Twist the paired ends of the wire for a 1-foot section. Pull open the untwisted sections of the wire with your hands, and mold the wires into two circular shapes, positioning the circles perpendicular to each other to form a globe.
Wrap the English ivy plant around the twisted trunk of the topiary tree form and the globe for the top of the tree.
Water the topiary tree thoroughly, and fertilize weekly with 10-10-10 fertilizer.