Big Leaf Magnolia (Magnolia macrophylla) This celebrity native tree with massive leaves and the largest single flower of any North American tree deserves to be growing in every school yard... better yet in your own yard! Jacob and our nursery volunteers propagated this tree in the spring. We have a few baby big leafs currently for sale through the gift shop. Come out to our Members-Only Fall Plant Sale on Thursday September 26th and purchase a 3 ft tree! | Yew Dell Botanical Gardens