This looks like a beautiful design, but you can accomplish a similar design using hog or cattle panels . and metal stakes to achieve the arch much more easiliy .also the metal is more durable .How to Build a Trellis Plan for Vertical Tomatoes
Building & Planting a Raised Bed Garden for Growing Vegetables.
How To Build PVC Tomato Cages - Stronger more durable support for your tomato plants. 40 X long PVC pipes 20 X long PVC pipes 20 X PVC crosses 20 X PVC elbows 4 X PVC tees cutter marker tape measure glue digging bar