Not only edible but very tasty! Makes a great pie and eats fresh out of hand well too! They don't keep well in the fridge so eat or use right away. While I too have read that the unripe fruit are toxic, from personal experience I suspect that is only with very unripe fruit. We tend to eat them from a dark red on to the purple-black color. But this can be an excellent teaching tool for a parent to teach plant safety, knowing positively before eating, what plants to avoid, and so on. Before my kids were allowed to pick and eat their own berries, they had to learn how to be safe, id the good as well as bad, and learned to treat what they don't know as poison. FataMorgana

I think I didn't load the photographs properly (again)... Apparently, as well as being unable to identify my citrus tree, I am clueless about how to upload photographs. :/ [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Topofcitrusfruit.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Topofcitrusfruit.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=2fruittogether.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_2fruittogether.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Clusteroffruit.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Clusteroffruit.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Sideangleoffruit.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Sideangleoffruit.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Sideangleof1fruit.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Sideangleof1fruit.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Anotherpictureofcitrusleaf.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Anotherpictureofcitrusleaf.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Semi-closeupoftree.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Semi-closeupoftree.jpg[/IMG][/URL] [URL=http://s53.photobucket.com/albums/g44/ICH76/?action=view&current=Pictureofwholetree.jpg][IMG]http://i53.photobucket.com/albums/g44/ICH76/th_Pictureofwholetree.jpg[/IMG][/URL] I hope this works!

Considering the upright growth habit and the big thorns on your tree, it is surely a seedling (as opposed to a grafted or cutting-grown) tree. So it is juvenile. Until it reaches maturity, it won't flower. From the appearance of the leaves, I'd say it is most likely a sour orange (Citrus aurantium), and if so, it is likely a sprout from the base of a previously grafted tree that froze at some time in the past. So the tree is a rootstock. It is possible that it's a grapefruit seedling, but it looks to me more like sour orange. If grapefruit, it will be quite cold-susceptible, especially while small. Sour orange is fairly cold-hardy and may be ok, especially if it is in a protected site. In either case, the lack of fruit is the due to the juvenility of the tree. It needs to get substantially taller, at which time it should start blooming. 9 feet is likely close, so it could be in the next couple years, assuming you don't prune it off, and that it doesn't get frozen.

It would help to see a picture of the entire plant or, at the least, a description of the entire plant. The 6th (I think) image -- darkish leaves -- may be a flowering crabapple. And consider posting in the Name that Plant Forum http://forums2.gardenweb.com/forums/namegal/ Here is a link that might be useful: images