i just copyed this from the obove site link.
the seeds hardley cost anything, for what they are.
i started a bird of paradise 3 years ago, it took 7 months to germ.
and its now 3 years old and only 10", but i have potted it on, and hope it start shooting up this year.
just saying these seeds, if started would take 3 years or so before they proper start to bush, and the seeds are hard to start, 10 times longer and harder than cannabis, if so try to get already rooted cuttings.
ask a neighbour for a cutting, or just take one from what ever tree you like. if you can.
if i ever see a flower shrub tree i like in a garden, i knock on the door and ask if i may have a cutting.
they always say yes.