Three-dimensional variant of a wavy cord . The spiral must be guided along a preformed frame.
The wavy shape naturally curdles the flow of juice. This has two advantages:
- The growth in the head is suppressed.
- Vegetative growth and flower bud formation (fruiting) are evenly distributed along the frame branch.
Recommended espalier shape. The spiral cord is both productive and graceful . To get a neat spiral tree, you have to guide the tree along a concrete wire that is spirally preformed.