Is there a course on the above & how much is it when is it?
Yes, the Toronto Botanical Gardens offered a class titled “Horticulture as Therapy ” presented by Margaret Nevett on January 24th. Here is the description: https://torontobotanicalgarden.ca/events/horticulture-as-therapy/#sthash.SsDuqM8p.dpuf . Sorry you missed it.
Please check the website for future offerings: https://torontobotanicalgarden.ca/category/learn/adult/