Well, even if you have to mail order, I would tell them that. One of my favorite places to order plants is www.mailordernatives.com They're located in north Florida but have a great variety of native plants including many host plants for my butterflies. One really good thing about the internet is that it has created more competition and access to plants we would never have had years ago. Especially when you start to get really specialized like how I need specific butterfly host plants. I have no problem telling a nursery, "I really wish you sold (this host plant) but you don't so I guess I'll buy it online." Anything to light a fire underneath them!