PLEASE NOTE: Due to personnel and funding shortages, DNR staff are currently unable to check trees nominated for the Big Tree program; however, dedicated volunteers are checking nominations as they are able to do so. To assist our volunteers, please consider donating to the program using the donation form provided below.
The Big Tree program serves to recognize the largest trees in the state, to focus attention on trees in general, and to encourage friendly competition among Iowa participants. For a list of Iowa’s current champion trees, and for information about nominating and measuring potential specimens, please see the following:
Big Tree Nomination Form
Big Tree Donation Form
Measuring Big Trees
Listing of Iowa's Biggest Trees