Kiwi plants are heavy bearers and need a strong trellis. The T-bar trellis described here is strong enough to support the vines and allows for easy harvesting. The fruit hang down below the trellis at eye height for easy harvesting.
With this design, plant the kiwi below the center of the trellis and train the stem as a single trunk up to the middle wire. Then, train two branches down the middle wire. The fruiting branches will grow over onto the side wires.
Dig post holes 15 to 20 feet apart and 2 1/2 to 3 feet deep using post hole diggers.
Mix concrete with water according to the package instructions. Insert 4-by-4 posts into the holes, and fill the holes with concrete. Allow the concrete to cure for 24 hours before proceeding.
Center the crossbeams on the top of each post. Use a brace to attach the crossbeams with nails or screws.
Stretch a piece of #12 wire between the end posts, securing it tightly to the center of the crossbeam on each end. Stretch two more wires between the end posts secured at either side of the crossbeam, so that the wires are strung like an old-fashioned clothesline.