Improved air layering system for tropical hardwood ornamentals in Hawaii©
The USA patent literature contains many forms of air layering devices. Hard structures with hinged sides can be found in the form of orbs, ellipses, and multichambered plastic pots. Additionally, pre-cut plastic sheets with attached gauze pads as the rooting medium and hydrophilic polymer tubes provide alternatives to pre-sized, hard enclosures. A new air layering system was developed in Hawaii that provides for wide variation in stem diameters and rooting medium volume. In our air layering system, rooting medium (high quality, long-stranded sphagnum moss) is encased in a tubular plastic net sack with length dependent on stem diameter and desired rooting medium volume. Large, woody stems (4- to 8-cm diameter) of a sterile, ornamental shade tree (Cassia × nealiae 'Wilhelmina Tenney', or rainbow shower) were the study structures used for refinement of the net sack air layering device.
DeFrank, J. (2018). Improved air layering system for tropical hardwood ornamentals in Hawaii©. Acta Hortic. 1212, 267-268