Name: Catmint/Robin PNW WA half hour south of Olym (Zone 8a)
Works great, @Speediebean ! The hashtag followed by user name sends a system message to the user that they have been mentioned in a post. Sure hope there is no user named 'whoever' around! ;-) I think you may have to use the whole user name, though--e.g., catmint20906.
"One of the pleasures of being a gardener comes from the enjoyment you get looking at other people's yards”
― Thalassa Cruso