Brand new instance dedicated to gardening, check it out!
Could probably create some communities there specific to flowers, vegetables, etc.
They could use some help getting users and getting federated–which will only help Lemmy overall, as lemmy.ml and beehaw.org are getting killed at the moment.
Not the person you asked, but when I try to search for “!gardening@thegarden.land” it returns with Gardening@ash1-lem-i1-u4829.vm.elestio.app which does in fact link to the correct place.