http://www.slowfoodusa.org/index.php/programs/ark_product_detail/datil_pepper/
Here is a site for a local grower and source. If you scroll down you’ll see and address and additional websites to visit for plants.
These things are easy to grow. I soak them in apple cider vinegar for a great pepper sauce in soups and on just about anything. Have a great time in St. Augustine!