How to Build an A-Frame Trellis. How can you instantly add space to your garden without having to expand it? Install a trellis! Trellises free up a lot of real estate by allowing you to grow crops up into in your garden's vertical space. Use this easy-to-build A-frame trellis to support cucumbers, small melons, gourds and sugar snap peas. Then, plant crops that prefer cooler temperatures, including cilantro, lettuce and spinach in the space underneath the A-Frame.
Select two 42-inch long two-by-two boards and two 36-inch long two-by-twos to form the first panel of the frame. Build the first half of the panel by screwing one short piece of wood to one long piece to form an L-shape (when forming the L, place the short piece of wood on top of the long piece, rather than on the inside). Repeat with the two remaining wood pieces.
Create the panel by placing the two L-shaped halves together to form a rectangle. Screw three of the corners together.
Mark the center point on each 36-inch board (18 inches). Add in a center support by placing a 42-inch two-by-two in the center of the panel and screwing it in place. Finish the panel frame by screwing together the final corner.
Measure a piece of hardware cloth, chicken wire or metal fencing to fit the panel and staple it into place. Then, build the second panel.
Create the A-Frame by laying the first panel hardware cloth side down on a level surface. For a 42-inch tall, 3-foot wide A-Frame, lay the second panel (hardware cloth side down) end to end with the first, butting the short sides up against each other. For a 3-foot tall, 42-inch wide A-Frame, lay the second panel (hardware cloth side down) end to end with the first, butting the long sides up against each other.
Open the hinges. Then position them on either edge of the abutting panels and screw them into place.