People head into the woods of Ackerman Park in Glen Ellyn to plant oak trees on Sept. 8. Glen Ellyn Park District naturalist Renae Frigo, right, takes a group photograph of those participating in the planting of oak trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8. A freshly planted oak tree as people work on planting additional oak trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8. People work on planting oak trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8. Laine Simpon, 8, of Glen Ellyn ties a red ribbon on an oak tree after planting it in the woods of Ackerman Park in Glen Ellyn on Sept. 8. Mike Blessing and his granddaughter Laine Simpon, 8, of Glen Ellyn plant an oak tree in the woods of Ackerman Park in Glen Ellyn on Sept. 8. Glen Ellyn Park District naturalist Renae Frigo, third from left, gives instruction on how to plant oak trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8. Glen Ellyn Park District naturalist Renae Frigo, right, gives instruction on how to plant oak trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8. Glen Ellyn Park District naturalist Renae Frigo, right, gives instruction on how to plant oak trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8. Glen Ellyn Park District naturalist Renae Frigo describes the type of trees in the woods of Ackerman Park in Glen Ellyn on Sept. 8.