I started Lime trees from seed. The trick to saving fruit seed is to not let it get dry. From the lime seeds I planted 5 of them in Styrofoam cups with a hole punched in the bottom and 4 are doing great and they are over 2 years old. We moved since I started those and it took me awhile to get them growing, but they are taking off now.
I currently have them planted in the very sandy soil across the front of our house, but they are going to be transplanted this winter to the bank. The roots may present a problem with the irrigation pipes and I don't want that, plus they can get pretty tall and bushy. I will put them where they can spread out and give us some privacy where it is needed.
I encourage you to experiment with growing fruit trees. Probably the best one for greenery to use in wreaths, etc. would be a Lemon Tree. I love the green glossy leaves of the Lemon.
