Now certain exactly what you are looking for, but there are hundred's of farms in both PQ and Ont.
We frequently go to Andrew's Scenic Acres in Milton, Ontario. You can pick your own berries or buy them in the country store. They have a nice wine shop too! Hay rides and pony rides and a nice playground. There is a petting farm too, but sometimes you can't enter the animal area. In October there is a HAUNTED FOREST! Pretty fun and it's free!