"The main technique used to produce disease tolerant hybrids was a process called recurrent selection. This breeding system selects the top two to four progeny of each cross rated for the particular attribute being selected for, in this case disease tolerance." - Digby Growns, Senior Plant Breeder Kings Park. These new Kangaroo paw hybrids will be commercially available in 2022.
Read more about the blue kangaroo paw here.