Create the Structure
A faux topiary can be constructed using a variety of creative bases – dowels, mesh, even upside down tomato cages. But for a realistic and rustic look, a trimmed tree branch will work nicely. Look for a straight branch 3' to 5’ in length, and use a saw to trim to length. You might find it helpful to use offshoots from this main branch for structural purposes, so trim them short using the pruning shears, but don’t remove them completely.
The branch will need to stand upright, so drill a hole into the base of a 4x4 piece of wood. Choose a paddle bit that is the same or only slightly larger than the diameter of your branch for a tight fit. The length of the 4x4 will depend on the planter you select for this project. Cut the board so that the height of the wood is slightly beneath the top of the planter.