Ty Ty offers for sale a wide variety of tall and wide caliper oak shade trees for your yard. Oak trees are generally slow growing trees, but the hardwood lumber is used for building, furniture and many other uses. Some famous huge oaks in Europe are thousands of years old, and that tree is the United States choice as the National tree, and many memorial specimens have been planted in honor of Presidents like the Eisenhower oak tree and the Carter live oak tree at Sea Island, Georgia. This mysterious group of oak trees will inter-cross to form hybrid oaks that presents a botanical conundrum. Some Oak trees are evergreen and others are deciduous, and the acorns are a very important food for wildlife animals and song birds.