Wikipedia suggests that there are no naturally resistant strains, although there is some genetically modified work ongoing. [https://en.wikipedia.org/wiki/Citr

Wikipedia suggests that there are no naturally resistant strains, although there is some genetically modified work ongoing. [https://en.wikipedia.org/wiki/Citrus_greening_disease#Control https://en.wikipedia.org/wiki/Citrus_greening_disease#Contro...] More interesting was a suggestion that a more holistic approach may have merit, i.e. improving overall soil/grove health with less intensive methods. [https://citrusindustry.net/2019/04/02/citrus-grower-sees-success-with-cover-crops/ https://citrusindustry.net/2019/04/02/citrus-grower-sees-suc...]