Hollies. I love their leaves and I...just really like them haha.
It was a really close tie with blue hydrangeas. I use both in my town. Blue hydras are probably one of my favorite flowers in real life, and the in game ones are gorgeous too.
Sweet olives. My town is Halloweeny so I wanted the one that would bloom in October, plus their orange flowers match the palette of the season wonderfully.
I love Holly the most, I have it around my house/plaza, but I'm also partial to Hydrangeas (both pink and blue) for a little extra colour in town, and they probably look the best without flowers!
Half Grown Azaleas actualy. I really like how they look like when the buds are still small and the diferentiation between white and pink is noticeable (I kinda dont like how pink the "White" Azaleas look like once they have fully grown, but I can live with it. )
Hibiscus and Hydrangeas are really really pretty too!
I like hydrangeas. They look cool even when they're out-of-season. I have the blue ones planted all around my house... Sweet olives are cool too, though.