Bunya nuts are slow to germinate. A set of 12 seeds sown in Melbourne took an average of about six months to germinate (with the first germinating in 3 months) and only developed roots after 1 year. The first leaves form a rosette and are dark brown. The leaves only turn green once the first stem branch occurs. Unlike the mature leaves, the young leaves are relatively soft. As the leaves age they become very hard and sharp. Cuttings can be successful, though they must be taken from erect growing shoots, as cuttings from side shoots will not grow upright.