Bur Oak Seedling Bundle

Bur oak is a large long-lived shade tree that is native to Minnesota. it has a stout trunk and a broad, rounded open crown of stout and crooked branches. The leaves are obovate in shape, being the broadest beyond the middle and the lower half of the leaf having 2 to 3 lobes on each side. The upper half of the leaf has 5 to 7 very shallow lobes and a broad round tip. The leaves are a dark green above, and gray-green with fine hairs underneath. The foliage turns brown in the fall. The bark on bur oak is light gray with thick, rough, deeply furrowed scaly ridges. Twigs on the tree are sometimes covered in corky ridges. Male flowers hang down in drooping catkins, female flowers are small spikes in leaf axils. They are not ornamentally important. The trees produce large acorns that are broadly elliptical and are enclosed by a deep cap that has hairy gray scales creating a fringelike border. Bur oak acorns are similar to white oak acorns, but the cap of the acorn covers more on a bur oak. Bur oak acorns are the largest out of all the native oaks.