Ideally, you'd be best finding it close to home where you could be more likely to purchase a larger plant and not pay shipping...

but if that fails, here:

Here is a link that might be useful: Greer Gardens - Casanova

Morz is right, but if that fails the following have it:

Eugene, Oregon: http://www.greergardens.com/

Norton, Ohio: www.daytonnursery.com/

Weston Nurseries in Hopkinton, MA might have it, but it is not on their website.

Thanks for the info. I really hope I can find it locally.