Leamington has a mild climate and fertile soil which combine to make it an area perfect for growing hundreds of fields of tomatoes. The town’s water tower, visible for kilometres in the flat southern Ontario landscape, is in the shape and colour of a giant tomato. The tourist information booth in downtown was shaped like a large fibreglass tomato (closed in 2019).

For many years, Leamington was the home of the H J Heinz factory. Now the tomatoes from the area are made into delicious French Ketchup.

The produce in the area is actually quite vast – from tomatoes to asparagus to watermelon. The area is also home to many greenhouses producing year-round vegetables.