Get two bamboo stakes. About a foot down, lash them together using 3ft of paracord. Leave a foot of extra cord on the end so you can wrap another bamboo stake later (step 3)
After lashing, spread the stakes and place them in the ground 4 feet apart. Push them in the ground about 6 inches deep. If they aren’t steady, grab another person or some kind of a crutch to keep them upright.
Lash together another set of stakes. Place them 7 feet down from the first set, spaced 4 feet wide, and push the stakes in ground 6 inches. Add a bamboo stake on top and tie it on using the tail of the paracord left in step one.
Repeat step 3, until you reach your desired length of trellis.
Roll out netting. Place it on the bamboo trellis, looping on a top square for each bamboo stake. This will tack it in place.
Use zip ties to attach the netting to the bamboo stakes. We used 2 to 3 zip ties on each stake.
Repeat step 5 and 6 on the other side. Then plant along the edge of the netting on the soil.
Notes
Supplies listed make about a 50 foot long trellis. I bought a 1000 ft of netting (linked) but you only need enough go down each side of the trellis. So a 50 ft trellis needs 100 ft of netting.
How strong the structure is depends on two factors: the depth of the bamboo stake in the ground and the tightness of the knot used for lashing.
A video guide for how to lash diagonally is linked under the step by step guide in this blog post if needed.