How to Design a Spiral Evergreen

How to Design a Spiral Evergreen thumbnail
Yew is a good conifer for creating topiary.

Topiary is the art of training plants into dramatic or whimsical forms not normally found in the plant kingdom -- everything from giraffes and elephants to geometric and formal shapes. Some topiary is developed from vining plants such as English ivy patiently trained onto metal forms that have been stuffed with sphagnum moss. Certain evergreen shrubs and trees can successfully be sculpted into topiaries, either freehand or by pruning to a topiary form placed over the plant. Designing spiral evergreen topiary is reasonably easy even for beginning topiary artists.

Things You'll Need

  • Topiary tree or shrub
  • Colored vinyl flagging tape
  • Hand pruning shears, sharpened
  • Grass shears, sharpened
  • Hedge trimmers (optional)
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Instructions

    • 1

      Select a young, conical evergreen shrub or tree. Boxwood, juniper, Eastern Red Cedar (Juniperus virginiana), privet, pyracantha and yew cultivars are among the best choices for a spiral-shaped topiary.

    • 2

      Avoid any tree or shrub with structural flaws that will affect your final design, such as a spindly or weak top or damaged areas that won’t fill in with leaves or needles. Choose the healthiest individual plant or plants available.

    • 3

      Even out the surface of the shrub with hedge trimmers, if needed, being careful not to remove too much vegetation. A smooth, even surface will make it easier to create a symmetrical shape.

    • 4

      Tie one end of colored vinyl flagging tape to the top of the tree and unwind the tape roll around the tree and down, to create a spiral stripe. Make sure the distance between the sections of the spiral is about equal -- 8 to 10 inches for a tall topiary.

    • 5

      Clip a narrow stripe just above or below the tape – whichever seems easier to you – using grass shears. Remove the tape, and go back and re-trim any areas that seem too thin. You now have a template for your final design.

    • 6

      Cut away all the foliage along the template line, top to bottom, working at a consistent angle or cutting straight in, perpendicular to the plant. Remove all leaves or needles, small stems and branches you encounter along the line, all the way down to the trunk.

    • 7

      Stand back and study your spiral design, looking for any irregularities. Clean up these rough spots. Finish by rounding off the outer edges with the grass shears or hedge trimmers, removing no more than 1 inch of foliage.

    • 8

      Cut off the top off your topiary shrub or tree to maintain your sculpture at that height. Let it grow two or three years longer if you want a taller topiary. Extend the spiral upward every year the topiary is still growing.

    • 9

      Maintain your spiral topiary by trimming it again with grass shears at the beginning of every summer, just as the year’s new growth starts to toughen up.

Tips & Warnings

  • Retain at least a slightly conical shape for your spiral topiary, so it’s wider at the bottom than the top. The base needs to be wider to prevent shading that will cause the loss of lower leaves.

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References

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  • Photo Credit Stockbyte/Stockbyte/Getty Images

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