What Shape Trellis Should You Get?
Since every garden is unique, and the best shape for your trellis is the one that works best in your garden and fits your gardening style. There are 2 basic trellis shapes: the A-Frame and the Box Frame, and there are many different versions of each of those.
A-Frame Trellis:
Stronger than Box Frame Trellis
More stable
Costs less
Easier to set up / take down
Allows for easier access to lower parts of plants
Box Frame Trellis:
Provides more climbing space than A-Frame Trellis
May be needed to avoid obstacles like vertical garden bed walls