Ingrid, They are an easy grower and like alot of light. They also grow best when mounted. If you go to
forums in the site menu to the left here, you will see there is a vendor's thread and there are some great vendors in Florida. However I know many Floridians who frequently order from other states and get prompt delivery. Andy's Orchids is in California and they do have the Brassavola nodosa. They ship FedEx and you get it within two days. They are highly recommended here on OB....as well as many others, but not sure who else carries this particular one off the top of my head.
with your search!