Making a Trench for Cuttings
Where cuttings are to be planted, a deep trench may best be made by inserting a flat spade and moving the handle back and forth a few times. The same method may be used for transplanting seedlings that have long roots, it being particularly desirable that the roots shall not be disturbed, lest growth be retarded.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 3 Chapter 4