Yes, some citrus are very thorny. Orange trees have thorns. It only bears a handful of fruit and only on the low branches. Wild Apple Tree Wild apple trees have thorns. This little Washington naval orange tree has sprouted suckers from its rootstock that need to be removed. Do blood orange trees have thorns throughout? The Osage orange tree, once a favorite of American settlers, deserves a look from modern-day homesteaders. I always thought that the rootstock had thorns, but if the entire tree had thorns, that meant the grafted bud had died and only root stock remained. It has wicked thorns (some over 4 inches long) and the fruit is about the size of a tennis ball with tons of seeds and as bitter as a jilted old maid. If you have the patience you can clip off the thorns that are in your way. Am buying a blood orange tree. I planted a Satsuma orange tree 5 years ago in my yard. Among the orange trees with thorns is the Trifoliata Orange. Do blood orange trees have thorns throughout? Most citrus are grafted onto a sour orange root stock. All the trees at this place have thorns from bottom through the top of the tree. Sure enough, this is an older variety which, according to ubcbonatincagarden.com, "is a good rootstock for 'dwarfing' other species." Garden Detective: Oh, what thorns! The wild orange is Poncirus trifoliata and is from the Rubacea (sp) family which is a close relative of citrus. But in any case it does usually take between 4 and 6 years for a tiny plant to grow to fruiting size. Blood Orange Trees. I always thought that the rootstock had thorns, but if the entire tree had thorns, that meant the grafted bud had died and only root stock remained. I'm not sure you'll get a Satsuma from the seeds of a Satsuma orange, necessarily. Q. Connie Lavoie Am buying a blood orange tree. It only bears fruit on branches that do not have thorns (only 3 branches) and the rest of the tree (basically the entire tree) is covered with thorns. Some lemon (Citrus limon), lime (C. aurantifolia) and orange trees (C. sinensis) naturally have thorns that grow regardless of which rootstock is used for grafting. All the trees at this place have thorns from bottom through the top of the tree.