Find a local feed store, you can most likely source a large bag (50# or so) for about $20 or even less. That would keep you supplied with alfalfa for the rest of your gardening career lol. SD
I would reccomend sourcing Dr Earths Alfalfa Meal for the probiotics it comes with. Cheap Lacto~ Innoculant IMO Just my 2 cents.
Lucky for you I was trying to find the same stuff among other things too and happen to live around ya. North York Farmers - Saddlery, Wild Bird Seed, Horse Feed, Giftwear, Petfood, Lawn and Garden, Farm Supply, Workwear give them a call and see if they have alfalfa on hand Cathy's Crawly Composters - Home of the Red Wiggler - Worm suppliers located in Bradford (holland marsh farming area), she has quality worm castings from red wrigglers and all the supplies needed to start your own vermicomposting. Alliston Feed Service Ltd 180 Albert St west, Alliston. 705-435-6438 Theres also a farming supply store in King City, Ive been to it years ago for something else but I don't know if its still there or what they have. If you have a source in Toronto for bulk amounts of kelp meal please let me know! I Hope this helps you out.