The Maine Rose Society will be exhibiting roses grown by its members and presenting a “Roses 101” program on Saturday, June 25, at O’Donal’s Nurseries in Gorham. The program begins at 10 a.m. and will cover topics including how to select the right rose for your garden, how to fertilize, prune and winterize roses, and how to treat rose diseases and pests. There will be another “Ask the Experts” Q&A session with MRS members at 1 p.m. The rose exhibit will be on display from 10 a.m. to 2 p.m. O’Donal’s will be offering 10% off all rose plants and rose-related products.