@Algot I haven't found a wholly satisfactory one myself. I just try to follow interesting gardeners where i can. One issue with the Fediverse is you'll find plenty of folks interested in gardening as a means to an ideological end, but its a bit more work finding people passionate about gardening itself.
This answer is very helpful.
I am a member of a local FOSS user group. One of the other active members is a botanist/gardener.
I've take the liberty of using your reply in my notes published for the group Let me know if it's a problem and I'll remove/modify it.
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