Jinglefruit
The black-nosed Reindeer
This, all my weeds and flowers are blocked in by clear tiles now just to stop them spreading. I have the flowers I want and any more than those are just pests now.I have that issue too, have to place patterns all round my gardens to keep flowers from spreading.
Have a second town I used for breeding flowers at one point and it's now about 80% flowers and if it wasn't holding a coupe villagers I don't have amiibo for, I'd delete the town because there's no way I'm gonna tidy them all.