Choose an appropriate piece of wood for mounting. Pieces that form interesting shapes are more visually appealing than straight ones, and branches that have nooks and crannies will provide support for your plants. Driftwood gathered near bodies of fresh water does not need any treatment, but driftwood found on beaches has to be soaked to leach out any salinity.
Place ocean-weathered driftwood in a large tub filled with fresh water. Place a heavy object on top of it to submerge it. Empty the water out and refill with fresh water every other day. Let the driftwood soak for two weeks, then set the driftwood in the sun to dry.
Snip off any wilted or dried leaves until the plant base where it connects to the roots is visible, and all the remaining leaves look healthy. Determine the best position for the plant by placing it on different areas of the wood surface. For a natural appearance, consider placing the plant into a curved hollow spot or in a junction where two branches meet.
Carefully trim away any roots that interfere with the root ball making good contact with the surface of the wood. After trimming, check for fit.
Put the gloves on your hands. Place a dime-sized dab of glue on the driftwood in the area you have chosen to anchor the plant. Allow it to set until tacky. Position the base of the plant where the leaves meet the roots over the tacky glue and press down firmly to secure it. Avoid attaching the plant only at its roots or its leaves. Properly attached, the upper leaves and the ends of the roots should not have contact with the glue.
Hide any glue residue by pressing small pieces of floral moss into any areas of glue that show around the edges of the plant. Allow the glue to dry completely according to the manufacturer's instructions, generally for at least 24 hours.