University of Maine Cooperative Extension will hold a question-and-answer session for home gardeners noon–1 p.m. April 16 at the Caribou Public Library, 30 High St., Caribou. UMaine Extension horticulture professional Kate Garland will be available with practical home gardening tips and Extension resources on soil testing, seed starting, gardening for pollinators, fruit tree pruning and read more UMaine Extension holds gardening Q&A in Caribou April 16