I will say I may somewhat break the mold on this, I'd probably love a gardening group. Unfortunately there's also people like me who's (current, maybe gardening group tho good idea) hobbies aren't conducive to meeting people at all. Like I like to walk around in the woods and take pictures of shit mostly, smoke a lil herb while I'm there. Sometimes I can meet dudes who wanna smoke but I avoid women out there because I'm no bear lol, I don't want to freak anyone out y'know? I do also read but nobody really talks about books at all ime (irl anyway). Like if I did do the spyware apps I'm sure "what're you reading right now" would be a good opener but like at the book store or library (where I'd actually be) seems inappropriate.
Even walking in the woods smoking/photoing, that's a great date activity, have a botanical garden nearby that's nature but still public and safe too which is even better, but I can't meet them there I have to talk to someone somewhere else and be like "hey I'm going this weekend you wanna tag along" and that's the part that is difficult when nobody wants to talk to anyone except in places where I'm not.