You might try contacting the Greenway Blooming Centre near Guelph on Hwy 7. They have a monarch butterfly area where they do seminars and raise butterflies. I believe that they supplied the livestock for one of our Monarch Teacher Network workshops last year in the Hamilton area.
Brenda (who is the teacher) and I have just returned from helping with a workshop down in New Jersey. What an amazing group of people. Have you been in contact with the Canadian group of this network? There are several in your area... perhaps you are one of them?
Brenda wants to organize a workshop in the Barrie area.