Let's see those Gardenias!
No idea how old this guy is, or exactly what kind, here when I moved in 6 years ago. Last summer I pulled all of the grass out from around it and put a leaf mulch, occasional kitchen scraps, lawnmower bag of grass. About a month ago, I put a fairly large deposit of scraps, and 4 bananas that had gotten too ripe, under the leaves. It's never bloomed this heavily before, definitely wafting downwind!
Trying to kill the Nandina strangling the base of it, and have liberated the 'denia from a lot of pieces of it, that's probably helping too although I'm not sure I'll win that battle. I've got a piece of sheet metal to smother the main patch, but the part that reaches over toward the Gardenia is really "in there." When I get a minute, I've been trying to get a clear spot between the 2 plants before I smother, but sheesh that's tough. There's a gas line there so I can't go a'shoveling.