Pre-registration with the leader is required, limit 12 participants.We will meet at Thornhill parking lot, P21, and take a long walk around much of the west side, including the river and Lake Marmo, but excluding the prairie. *Please note that a timed-reservation entry is required for all NON-members. Timed entry tickets can be obtained at the following link below. https://mortonarb.org/visit-the-arboretum/. If you don’t have an arboretum membership, let us know and you can follow us in. It will cost $5.00.Leader: Mike and Karen Warner, mwarner2543@gmail.com, 630 640-2450