Look on the business section of this website and see if you can get on with one of the landscapers that does organic/natural work in the area where you live. That's the best advice I can give, for what it's worth.
Landscape architect is a degree you have to earn from a university. I believe, but don't hold my feet to this fire, that the University of Texas at Arlington awards such a degree but you would be best at calling them!
Landscapers can take a few courses from the extension service, put a shingle on their door and go to work. But there's a lot of landscapers out there with good credentials who will give you stiff competition.
Good luck and welcome to our world. It's nice & green here.
