Spring Plant Sale. Date Saturday, May 21, 2022. Location The Dawes Arboretum 7770 Jacksontown Rd SE Newark, OH 43056. Share this event. Saturday, May 21 | 8 - 9am for members, 9am - 2pm for everyone. Shop for spring! Arboretum experts will be available to answer questions about plant care and suitability for your location. Shop a variety of.