Xerophyllum tenax isn't easy to grow, but if you wish to purchase the seeds you might try:

Here is a link that might be useful: Inside Passage Seeds

So...you're not interested in the other bear grass (nolina) ?

Forestfarm nursery (www.forestfarm.com) carries both bear grass and standing winecup.

Thanks for the help with Bear Grass and standing Winecup.

I have three plants of standing winecup and am curious how many years it takes for them to bloom. I think technically this is the second year and they are doing well but I'm very anxious for them to bloom. I grew them from seed.