Unless a female plant is found, E. woodii will never reproduce naturally. This species is known to form fertile hybrids with E. natalensis, and a backcrossing technique can be used: if each offspring is subsequently crossed with E. woodii and the process is then repeated, after several generations, female offspring will be closer to what a female Encephalartos woodii would be like.[4] However, genetic analysis of chloroplast DNA of F1 hybrids between E. woodii and E. natalensis showed that all chloroplasts are inherited from the female E. natalensis,[19] indicating that multigenerational hybrid offspring would have E. natalensis chloroplasts and could never be "pure" E. woodii.
https://en.wikipedia.org/wiki/Encephalartos_woodii