Measure 3 inches out from the wall and place a mark. Move down the wall, 1 to 2 feet longer than the length of the trellis netting, and measure 3 inches out from the wall again. Snap a chalk line between these two marks.
Run a stud finder over the chalk line to locate the ceiling joists. Place a small pencil mark along the chalk line to indicate each joist.
Unroll the trellis netting and lift if up to the ceiling. Hold one of the netting's corners up to the first ceiling joist. Secure the netting to the stud with a staple, using a staple gun.
Stretch the netting down to the next ceiling joist and secure it with a staple. Continue stretching the netting and securing it to ceiling joists until you reach the end. Place your plants on the floor in front of the trellis netting so they can climb up it.