Seeds needs to have the whitish interior just exposed by nailfile/sandpaper on a small area of the edge of the seed. They then germinate very quickly. Like plenty of water at this stage. Grow VERY slowly after initial start; 20cm in the first few months. FROST kills them when young. You then have to mimic natural conditions; poor, very well drained soil and VERY INFREQUENT rain. I have failed at both these points..
Would l;ove some more seed to try again.
BillAus Canberra