Salisbury greenhouse has launched Alberta Grows, which they call a social media site but I think can be more accurate described as a forum. It’s divided into categories for gardeners to ask questions and share information. I did set up an account (I’m Jocelynb on there — great naming creativity, I know) and I’ve logged in a few times but there doesn’t seem to be much action on there, which, of course, is what makes a good forum. Has anyone else tried it?
Another forum I like is Far North Gardens, hosted on Houzz. Just randomly, that group seems to be a lot of fruit growers, so it might not align with everyone’s interests.