Photo by Connie Oswald Stofko The Cornell Cooperative Extension of Erie County Master Gardener Program will host its Education Day from 8:30 a.m. to 3 p.m. Saturday, March 11 at Classics V Banquet Center, 2425 Niagara Falls Blvd, Amherst. Speakers and topics are: Gardening with Flowering Shrubs in the North. Tim Boebel, nursery manager at Wayside Garden Center in Rochester. Author of Hydrangeas in the North and Today’s Hydrangeas. Container Gardening: Drama for Every Season. Paul Zammit, past director of the Toronto…