In addition to the annual Toronto Botanical Garden plant sale, being held May 13-15 this year (where Master Gardeners will be on hand to answer your questions, the TBG is the site of some other organizations’ sales, such as:
Toronto Rhododendron Society Plant Sale – April 30, 2016 https://onrhodos.com/plantsale/
Ontario Rock Garden & Hardy Plant Society Plant Sale May 1, 2016, www.onrockgarden.com/page/super-plant-sale
But as they say on TV, “Wait, there’s more!”
Almost every garden club and horticultural society in the province hosts plant sales at this time of year. To check out which may be happening near you, view this list, published by Garden Making magazine.