Las vegas palmer
From what I've been told, Las Vegas is a good place to grow and sell palm trees. If you have the space and connections to do so I say you go ahead and do it. Believe it or not Palm trees are in high demand and people constantly want these exotic looking trees in their home or business. It's definitely a good route to go. Try getting some windmail, canary, California, royal, and sylvester palms. These are the most popular palms so you might want to go ahead with these first. Good luck in your new business venture!