LEAF – Trees & Memories Grow Here! Trees & Memories Grow Here! If you love Frontier Park, please consider giving $25 or more to the Lake Erie Arboretum at Frontier Park (LEAF) on August 9 during Erie Gives Day. The Erie Community Foundation will match a percentage of your donation when you donate through ErieGives.org To all of our supporters, we thank you very much for helping us fulfill our mission! Support LEAF on Erie Gives Day!