2.) Where can I find seed/plants? A local source is preferred.

I've bought fresh Mexican Oregano at Lowes a couple of years in a row. Lowe's
usually has an assortment of unusual herbs, sometimes in containers with other
herbs.

I use dried Mexican Oregano totally for my oregano. I buy mine from a
wholesaler (Southern Foods). I especially like to use it in vinaigrettes and
spicy tomato sauces. In the dried form, it is much leafier than Italian
Oregano and integrates better in sauces and vinaigrettes.

Holly