The St. Williams Nursery and Ecology Centre is located in Norfolk County, in the heart of southern Ontario's "Carolinian life zone".  The very moderate micro-climate combined with light sandy soils makes it ideal for field production of bareroot seedlings as well as for growing native seed crops.

New greenhouse facilities were added in the last few years and the nursery now boasts fourteen acres of modern Westbrook and Cravo (retractable-roof) greenhouses, automated seeding and production equipment, modern environmental control systems, and high-capacity packaging/shipping facilities.  Also, St. Williams N&EC's production fields, equipped with irrigation systems and access to a supply of clean fresh water, cover more than 300 acres.  If all production capacity was devoted to reforestation tree seedlings, more than 5 million bareroot and over 20 million container plug seedlings could be produced on an annual basis at the nursery.