The holiday season brings
tempting displays of shaped rosemary Christmas trees, hearts wound with
herbs and giant ivy covered reindeer. There is no mystery to making
a topiary, all that is required is a bit of patience and an imagination.
Topiaries can be placed in three categories: pruned, trained and creeping.
PRUNED TOPIARY
Pruned topiary feature plants
that are pruned as they grow to create a desired shape. They may
be whimsical figures ( Disney World or the larger than life rendition of
George Seurat's painting "A Sunday Afternoon on the Island of LaGrande
Jatte" located in Columbus, Ohio), or geometric forms such as the common
lollipop standards and rosemary Christmas trees. While they may be
pruned into shape free hand, larger figures often feature an interior framework
of metal bars that serve as shaping guides. Herbs that work as pruned
topiary include Myrtus communis, Westringia rosmariniformis, Rosmarinus
officinalis, Helichrysum angustifolium, Lavandula spp. and Pelargonium
spp. Here are some good beginner designs:

TRAINED TOPIARY
These charmers are created
by winding long branched plants around a framework. They are commonly
created with ivy or prostrate rosemary. For more of a challenge try
using Pelargonium 'Lemon Crispum', mints or Satureja montana.
Frames may be purchased or made using 14-16 gauge wire. The lower
portion of the framework should be designed to be anchored in the soil.
Select plants with at least one long branch, the more branches, the faster
the frame will be filled. After planting, drape the plant around
the frame and tie if necessary. As the plant grows keep winding it
around the frame and pinching branches to form a bushy plant.
CREEPING TOPIARY
These are made using a framework
stuffed with long fiber sphagnum moss. They can be purchased or made.
Artistic gardeners will shape 14-16 gauge wire into desired three dimensional
shapes, securing joints with solder, wire or waterproof tape. Fish
line is used to encase the stuffing of long fiber sphagnum moss.
Soak the moss before packing firmly into the frame. The form may
be covered with sheet moss secured with pins for a more finished look.
Have many small cuttings of your plant ready. Make pockets in the
moss and add a bit of potting soil and the cutting. Cover the soil
with moss. Continue placing cuttings on the form, with the majority
near the bottom as the plants will naturally grow upward. Hairpins
or florist pins may be used to secure the growing plants to the form.
The figure will require daily monitoring to ensure that it does not dry
out. These are the most demanding of the topiary types and are susceptible
to fungus, mold and insect damage. Plants that work well as creeping
topiary are ivy, Mentha requienii, and creeping forms of thyme.