Two cones on the same path can look identical and be built two different ways. One is a shrub shaped by years of clipping. The other is a vine wrapped over the outside of a wire cone. The types of topiary split three ways: a specimen clipped straight into the plant, a stuffed or mock form, and a plant trained to grow inside a frame. UGA Extension Bulletin 961 draws the line between those last two.
A clipped specimen is the plant itself, pruned to an unnatural form. That form is either a geometric shape or a whimsical animal, and you get there with shearing and heading-back cuts. Balls, pyramids and cubes need no frame at all. You cut them by eye, or you hold a template against the plant and trim to the edge until your profile matches it.
A stuffed topiary, also called a mock topiary, carries its vines on the outside of the wire. The frame is the finished shape from day one. Your outline reads correctly before a single leaf covers it, and the work is feeding stems around the wire and pinning them as they run. Nothing waits on the plant. That is why a swan or a rabbit is usually a stuffed piece.
A wire frame topiary works the other way around. Your plant grows up inside the frame and keeps going until it fills the outline, and anything that pushes past the wire gets sheared back flush. Set the frame over the plant early, while the shrub is still small enough to sit inside it. Use galvanized or plastic-coated wire for the frame itself.
Clipped Specimen
- Method: Shear and head back the plant itself until it holds the shape you want, with no frame involved.
- Best shapes: Balls, pyramids and cubes, cut by eye or against a template.
- Subjects: Box, yew, privet, holly and Lonicera nitida all take shearing.
Stuffed Or Mock Topiary
- Method: Train vines over the outside of a wire frame so the frame carries the shape.
- Best shapes: Animals and other detailed figures that would be slow to cut freehand.
- Trade-off: The form is the wire, so your plant is a cover rather than the structure.
Frame-Trained Topiary
- Method: Place a frame over a young plant and let it grow up inside until it fills the outline.
- Frame type: Galvanized or plastic-coated wire, put in place early rather than added later.
- Upkeep: Shear back every shoot that breaks the line of the wire.
Plant choice narrows fast, and it narrows the same way for all three types of topiary. Box, yew, privet and holly take shearing well and hold a crisp edge between cuts, which is why you see the same short list everywhere. Box and yew are slow growers, so a clipped standard from a young plant is a project measured in several years. Privet puts on growth faster, and your outline closes sooner.
Pick by patience. Want a globe or a cube this season? Shear a box or a yew by eye and skip the wire. Want an animal today? Go stuffed, since the shape arrives with the frame. Want an animal that is a real shrub underneath? Fit a frame around a young plant and start shearing. That last one is the route worth your patience, because the shape lives in the plant instead of the wire.
Three other trained forms get filed next to the types of topiary and belong in none of them. Espalier flattens a tree against a wall or wires. Pleaching weaves the tops of a row of trees into a raised hedge. Pollarding cuts a tree back to the same knuckles each year. Topping is none of these. You will hear it called shaping anyway, but it is a bad pruning practice, not a style.
Read the full article: Topiary: How to Shape Plants Without Killing Them
