We made a trellis for the garden last fall, but my post about it was rather light on details. We built 3 more of them during our spring break, so here are detailed building and installation instructions.
Materials for 1 straight trellis:
Three 2 in. x 2 in. x 8 ft. pieces of cedar
Welded wire fencing (like this or this), 4 ft. x 6-7 ft. (we bought a whole roll)
Two 3 in. pieces of copper tubing
Two 6 in. heavy duty wood screws (like these)
Materials for 1 corner trellis:
Above materials, plus one more cedar 2x2x8
For the straight trellis, cut one of the pieces of cedar into two 44 in. lengths. Using a power miter box (chop saw) cut a 45 degree angle into the bottom of each of the other two 8 ft. pieces (to make them pointy at the bottom). Lay out your pieces like this:

Fasten the pieces together with standard decking screws:
Next, roll out your fencing and cut to size with a wire snips:
Staple the fencing to the cedar posts:
Finished straight trellis:
(see the pointy bottoms?) Now for the corner trellis variation:
For this, you have three 8 ft. pieces and four 21 in. pieces. Lay it out and fasten the outside corners with the decking screws, but only fasten one side to the center piece. It’s much easier to staple the fence on when the structure can be laid out flat on the ground.
After you’ve stapled on the fencing, flip the whole thing over and fold it up. Fasten the final screws and you’re done building. We had to then store these in the garage for two more weeks while we waited for the snow to melt. Today we finally installed them!
Pound them into the ground about six inches with a mallet, about 4 inches from the foundation.
Make sure they fit in the spot where you want them because this is a permanent installation! Attach them to the house using the copper tubing and 6 in. screws, like this:
The copper tube protects the screw and makes things look a little nicer.
Total cost for the straight trellis: around $30. Corner trellis, about $36, depending on the price of cedar. Please, use cedar if you plan to grow edibles on these! It’s significantly more expensive than green-treated, yes, but you don’t want any chemicals leaching into your vegetable garden. I’m not 100% anti-green-treated lumber — can’t afford to be — but where edibles are concerned it’s worth it.
So, so jazzed about these trellises. I plan to plant cucumbers, two different varieties of pole beans (including Christmas Lima Beans!) and hops on them. Yay! Questions? Bonus points to anyone who guesses correctly how many drills Adam actually owns.