If you can afford to buy a plant, I wouldn't recommend growing from seed. They are EXTRA SLOW growing as seedlings.

See this thread in another forum....

Here is a link that might be useful: UBC - Sciadopitys from seed

I got some seed seven years ago, had no trouble getting it to germinate; put it in baggies, mostly just ignored it, and planted out the germinants when they happened. However, they are very slow growing, some are still less than six inches tall. I unfortunately managed to kill off most with a pelleted fish fertilizer, along with some other valuable container plants. They might benefit from greenhouse conditions--mine don't have that luxury.