The Cummer Oak is a live oak (Quercus virginiana) located on the grounds of the Cummer Museum and Gardens, 829 Riverside Ave, Jacksonville, FL 32204. It is estimated to be 175 to 200 years old. It is 21 feet in circumference, 80 feet tall, and with a crown spread of 138 feet.
The Cummer family found the majestic oak on the banks of the St. Johns River when they moved to Florida from Michigan in the 1890s. Arthur and Ninah Cummer built their home around the tree in 1902. After Ninah’s death in 1958, the property and Ninah’s art collection were transferred to a foundation which opened the museum in 1961. The Cummer Oak was added to the National Register of Historic Places in 2010.