A few beautiful outdoor trellis designs can be using a lattice panel, recycled ornate iron piece, old window frame and vintage wire fencing, as noted by Better Homes and Gardens. Some other design ideas are circular, arched and metal piping trellises.
Trellises with lattice designs are popular as outdoor structures in gardens. This can be a do-it-yourself project that requires lattice fencing and two-by-four lumber to build a three-panel trellis, as noted by This Old House. Complete instructions on building this structure is provide by this website. The lattice trellis design may be suitable for climbing vines and plants that require support.
Some other interesting trellis design ideas are to recycle old furniture or house items, such as an old iron headboard or frame window with a transom into wall-mounted trellises. This type of trellis may be appropriate for a brick wall siding. The Better Homes and Gardens website has these and more than 10 other different design ideas for trellises. Similarly, a wooden circular trellis is another design idea that can add contrast to any space of a garden.
Although wood is a popular material for trellises, other materials can also be suitable for these structures, such as wrought iron, vintage wire fencing an metal piping. Another design idea for a trellis can be a metal hoop, as noted by the Home Stratosphere website.